WO2016048020A1 - 3d 파노라마 이미지 생성을 위한 영상 생성 장치 및 방법 - Google Patents
3d 파노라마 이미지 생성을 위한 영상 생성 장치 및 방법 Download PDFInfo
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- WO2016048020A1 WO2016048020A1 PCT/KR2015/009981 KR2015009981W WO2016048020A1 WO 2016048020 A1 WO2016048020 A1 WO 2016048020A1 KR 2015009981 W KR2015009981 W KR 2015009981W WO 2016048020 A1 WO2016048020 A1 WO 2016048020A1
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/30—Determination of transform parameters for the alignment of images, i.e. image registration
- G06T7/33—Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/111—Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/128—Adjusting depth or disparity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/207—Image signal generators using stereoscopic image cameras using a single two-dimensional [2D] image sensor
- H04N13/221—Image signal generators using stereoscopic image cameras using a single two-dimensional [2D] image sensor using the relative movement between cameras and objects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/261—Image signal generators with monoscopic-to-stereoscopic image conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/271—Image signal generators wherein the generated image signals comprise depth maps or disparity maps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
Definitions
- the present invention relates to an image generating apparatus and method for generating a 3D panoramic image, and more particularly, to generate an image for generating a 3D panoramic image based on a plurality of 2D images and a depth map corresponding to each of the plurality of 2D images.
- An apparatus and method are provided.
- recently developed electronic devices such as smart phones and tablet PCs may generate 2D panoramic images using 2D images continuously photographed through an embedded camera.
- recently developed electronic devices may generate 3D panoramic images using a plurality of consecutively photographed 2D images.
- the following method is applied as a method for generating a 3D panoramic image based on a plurality of 2D images.
- a 3D panoramic image is generated using a 2D panoramic image and a depth panoramic image (hereinafter, referred to as a first conventional technology).
- the first conventional technology generates a 2D panoramic image using a plurality of consecutively photographed 2D images, and generates a depth panoramic image based on a plurality of depth maps corresponding to each of the plurality of 2D images.
- the first conventional technique is to generate a 2D panoramic image as a 3D panoramic image based on the depth panoramic image generated from the plurality of depth maps.
- two sets of strips are generated by extracting the strip of the camera from the 2D image, and the series of stitches are mosaicing or stitched to generate a 3D panoramic image. (Hereinafter referred to as a second prior art).
- the present invention has been made in accordance with the above-described needs, and an object of the present invention is to generate a 3D panoramic image without distortion from a plurality of 2D images.
- an object of the present invention is to generate a 3D panoramic image without distortion by using a hand-held camera without a separate auxiliary device.
- Method for generating a 3D panoramic image in the image generating apparatus for achieving the above object comprises the steps of receiving a plurality of 2D image and a plurality of depth map corresponding to the plurality of 2D image, Setting a left eye image area and a right eye image area for each of the plurality of 2D images based on the plurality of depth maps, and synthesizing the image image of each of the left eye image areas set in the plurality of 2D images to produce a left eye panoramic image Generating a right eye panorama image by synthesizing a video image of each right eye image region set in the plurality of 2D images.
- At least one 2D image of the plurality of 2D images may overlap with a part of the front and rear 2D image.
- the setting may include analyzing a depth value of each region of each of the plurality of depth maps, and left an image region belonging to a first region of a preset first region among the image regions of each 2D image corresponding to the region having a similar depth value.
- the image area may be set, and the image area belonging to the second preset area may be set as the right eye image area.
- the setting may include setting an image area for each of the plurality of 2D images by using a color segmentation algorithm, and setting an image area belonging to a first predetermined area among the set image areas as a left eye image area.
- An image area belonging to the second area may be set as a right eye image area.
- the method may further include extracting feature points from the plurality of 2D images, and the generating may include extracting left eye panorama images of the plurality of left eye image areas based on feature points of respective image images of the plurality of left eye image areas.
- the right eye panorama image of the plurality of right eye image areas may be generated based on feature points of respective image images of the plurality of right eye image areas.
- the photographing apparatus uses the reference direction and the reference to the plurality of 2D images and the plurality of depth maps. And correcting the reference image and the reference depth map obtainable when the image is captured at the position, wherein the setting comprises: left and right eyes for each of the plurality of corrected 2D images based on the corrected reference depth map. You can set the image area.
- the estimating may include estimating a photographing direction and a location of the photographing apparatus based on at least one of change information of feature points extracted from the plurality of 2D images and a result measured by a sensor, and the sensor may be an inertial measurement sensor.
- IMU Inertial Measurement Unit
- the method may further include generating depth maps corresponding to the plurality of 2D images.
- the generating may include synthesizing the video images of the plurality of left eye image areas by using an image mosaicing algorithm and synthesizing the video images of the video images of the plurality of right eye image areas.
- the image generating apparatus is an image input unit for receiving a plurality of 2D image and a plurality of depth map corresponding to the plurality of 2D image, based on the plurality of depth map, A region setting unit for setting a left eye image area and a right eye image area for each of the 2D images of the camera; and a left eye panorama image by synthesizing the image images of each of the left eye image areas set in the plurality of 2D images; And a controller configured to generate a right eye panoramic image by synthesizing a video image of each right eye image region set therein.
- At least one 2D image of the plurality of 2D images may overlap with a part of the front and rear 2D image.
- the area setting unit may analyze a depth value of each area of each of the plurality of depth maps to determine an image area belonging to a predetermined first area among the image areas of each 2D image corresponding to an area having a similar depth value.
- the region may be set as an area, and the image region belonging to the second predetermined region may be set as the right eye image region.
- the area setting unit sets a plurality of image areas for each of the plurality of 2D images by using a color segmentation algorithm, sets an image area belonging to a first predetermined area among the set image areas as a left eye image area, and sets a predetermined first image area.
- An image area belonging to two areas may be set as a right eye image area.
- the controller may be further configured to extract feature points from the plurality of 2D images, and generate a left eye panoramic image of the plurality of left eye image areas based on feature points of respective image images of the plurality of left eye image areas among the extracted feature points.
- the right eye panorama image of the plurality of right eye image regions may be generated based on feature points of each of the image images of the plurality of right eye image regions.
- the plurality of 2D images and the plurality of depth maps may be determined by considering a position estimator for estimating a photographing direction and a position of the photographing apparatus for photographing the plurality of 2D images and an estimation result estimated by the position estimator.
- the apparatus may further include an image converter configured to correct a reference image and a reference depth map obtainable when the photographing apparatus is photographed from the reference direction and the reference position, wherein the region setting unit is configured to correct the plurality of 2D based on the corrected reference depth map.
- a left eye and right eye image area may be set for each image.
- the position estimating unit estimates a photographing direction and a position of the photographing apparatus based on at least one of change information of feature points extracted from the plurality of 2D images and a result measured by a sensor, and the sensor may include an inertial measurement sensor ( Inertial Measurement Unit (IMU).
- IMU Inertial Measurement Unit
- the controller may match an image between 2D images corresponding to the direction and position of the photographing apparatus estimated based on a result measured by the position estimator ( Stereo Matching) may generate a depth map corresponding to the plurality of 2D images.
- the controller may synthesize the image images of the plurality of left eye image regions by using an image mosaicing algorithm, and synthesize the image images of the image images of the plurality of right eye image regions.
- the image generating apparatus may generate a 3D panoramic image without distortion based on the plurality of 2D images.
- FIG. 1 is a block diagram of an image generating apparatus for generating a plurality of 2D images as a 3D panoramic image according to an embodiment of the present invention
- FIG. 2 is a detailed block diagram of an image generating apparatus according to an embodiment of the present invention.
- FIG. 3 is an exemplary diagram of generating depth maps corresponding to a plurality of 2D images based on a plurality of 2D images in the image generating apparatus according to an embodiment of the present invention
- FIG. 4 is an exemplary diagram for setting a left eye image area based on a depth map of a 2D image in an image generating apparatus according to an embodiment of the present invention
- FIG. 5 is an exemplary diagram for setting a right eye image region based on a depth map of a 2D image in an image generating apparatus according to an embodiment of the present invention
- FIG. 6 is a block diagram of a photographing apparatus according to an embodiment of the present invention.
- FIG. 7 is a flowchart illustrating a method of generating a 3D panoramic image in an image generating apparatus according to an embodiment of the present invention.
- FIG. 1 is a block diagram of an image generating apparatus for generating a plurality of 2D images as a 3D panoramic image according to an embodiment of the present invention.
- the image generating apparatus 100 may be a camera capable of capturing a panoramic image in a 2D form.
- the image generating apparatus 100 includes an image input unit 110, an area setting unit 120, and a controller 130.
- the image input unit 110 receives a plurality of depth maps corresponding to each of the plurality of 2D images and the plurality of 2D images.
- each of the plurality of 2D images is preferably overlapped with a part of the front and rear 2D image.
- the plurality of 2D images are images captured by the photographing apparatus 10 to be described later, and the plurality of depth maps corresponding to each of the plurality of 2D images are generated in the image generating apparatus 100 or from an external device (not shown). Can be received.
- the present invention is not limited thereto, and a plurality of 2D images and a depth map corresponding to each of the plurality of 2D images may be received from an external device (not shown).
- an external device that generates a depth map corresponding to each of the plurality of 2D images may be a depth image photographing device.
- the depth image capturing apparatus may generate a depth map corresponding to each of the plurality of 2D images through at least one of a pattern projection method, a stereo camera method, and a time of flight method.
- the area setting unit 120 sets a left eye image area and a right eye image area for each of the plurality of 2D images corresponding to each of the plurality of depth maps based on the plurality of depth maps.
- the area setting unit 120 analyzes depth values of respective areas of the plurality of depth maps, and belongs to a first area of a preset first area of each 2D projection image area corresponding to an area having a similar depth value.
- the image area may be set as the left eye image area, and the image area belonging to the second predetermined area may be set as the right eye image area.
- the area setting unit 120 sets a plurality of image areas for a plurality of 2D images by using a color segmentation algorithm, and sets an image area belonging to a first predetermined area among the set image areas as a left eye image area.
- the image area belonging to the second predetermined area may be set as the right eye image area.
- the controller 130 generally controls the operations of each component of the image generating apparatus 100.
- the controller 130 generates a left eye panoramic image by synthesizing the video image of each of the left eye image areas set in the plurality of 2D images.
- the controller 130 generates a right eye panorama image by synthesizing the video image of each right eye image region set in the plurality of 2D images.
- the controller 130 extracts a feature point from each of the plurality of 2D images.
- the technique of extracting the feature points from the 2D image is a known technique, detailed description thereof will be omitted.
- the controller 130 may include a left eye panorama of the plurality of left eye image areas based on feature points of each of the image images of the plurality of left eye image areas among the feature points extracted from each of the plurality of 2D images. Create an image.
- the controller 130 generates a right eye panorama image of the plurality of right eye image regions based on feature points of respective image images of the plurality of right eye image regions.
- control unit 130 generates a left eye panorama image by synthesizing the video images of the plurality of left eye image regions by using an image capturing algorithm, and synthesizing the image images of the plurality of right eye image regions to obtain a right eye panorama image. Can be generated. Since a technique of synthesizing an image image by synthesizing such an image image is a known technique, detailed description thereof will be omitted.
- FIG. 2 is a detailed block diagram of an image generating apparatus according to an embodiment of the present invention.
- the image generating apparatus 100 may further include a position estimator 140 and an image converter in addition to the above-described configuration of the image input unit 110, the region setting unit 120, and the controller 130. 150) may be further included.
- the position estimator 140 estimates the photographing direction and the position of the photographing apparatus 10 capturing a plurality of 2D images, and the image converter 150 considers the plurality of images in consideration of the estimation result estimated by the position estimator 140.
- the 2D image and the plurality of depth maps are corrected by the reference image and the reference depth map obtainable when the photographing apparatus 10 captures the images in the reference direction and the reference position. Therefore, the area setting unit 120 may set left and right eye regions for each of the plurality of corrected 2D images based on the reference depth map corrected by the image converter 150.
- the position estimator 140 estimating the photographing direction and the position of the photographing apparatus 10 is based on at least one of the change information of the feature points extracted from the plurality of 2D images and the result measured by the sensor. It is possible to estimate the shooting direction and position of the.
- the sensor is an inertial measurement unit (IMU) that detects an inertial force of a motion and provides various navigation related information such as acceleration, speed, direction, and distance of the photographing apparatus 10 as an inertial measurement target, and includes an acceleration sensor and a gyro. At least one of the sensor and the geomagnetic sensor.
- IMU inertial measurement unit
- the controller 130 corresponds to the direction and the position of the photographing apparatus 10 estimated based on the result measured by the position estimator 140.
- Depth maps corresponding to the plurality of 2D images may be generated by stereo matching between the images.
- FIG 3 is an exemplary diagram of generating a depth map corresponding to a plurality of 2D images based on the plurality of 2D images in the image generating apparatus according to an embodiment of the present invention.
- the photographing apparatus 10 may photograph the subject while moving from the left to the right and photograph the subject in the left direction.
- a first 2D image 310 of the subject photographed on the left side may be generated.
- a second 2D image 320 of the subject photographed on the right side may be generated.
- the controller 130 may include the feature points and the second and second feature points of the 1-1 and 1-2 objects 311 and 313 included in the first 2D image 310.
- the feature points of the 2-1 and 2-2 objects 321 and 323 included in the 2D image 320 are compared. That is, the controller 130 may include pixel values corresponding to the feature points of the first-first object 311 included in the first 2D image 310 and the second-first object 321 included in the second 2D image 320.
- the controller 130 may include a pixel value corresponding to a feature point of the first-second object 313 included in the first 2D image 310 and the second-second object 323 included in the second 2D image 320. Compare pixel values corresponding to the feature points of
- the difference between pixel values between the 1-2 object 313 and the second-2 object 323 is equal to or greater than a preset threshold value, and the first-first object 311 and the second-first object 321. If the difference between the pixel values is less than the predetermined threshold value, the controller 130 determines that the 1-2 object 313 and the 2-2 object 323 are located near the photographing apparatus 10. That is, the position of the object located in the near distance with the photographing apparatus 10 may be changed to be larger than the position of the object located in the far distance with the photographing apparatus 10.
- the controller 130 may determine a depth value of the first-second object 313 included in the first 2D image 310 and the second-second object 323 included in the second 2D image 320.
- the first and second 2D images may be set higher than a depth value of the 1-1 object 311 included in the 2D image 310 and the 2-1 object 321 included in the second 2D image 320.
- a depth map may be generated for each of 310 and 320.
- the controller 130 may include the feature points of the first-first and first-second objects 311 and 313 included in the first 2D image 310 captured by the photographing apparatus 10 and the second 2D image 320.
- the photographing direction and the location of the photographing apparatus 10 may be estimated based on the feature points of the 2-1 and 2-2 objects 321 and 323 included in the.
- the image generating apparatus 100 may perform the reverse direction among the plurality of 2D images photographed from the photographing apparatus 10 through the photographing direction and the position of the photographing apparatus 10 at the time when the plurality of 2D images are captured.
- the remaining 2D images other than the 2D images photographed at may be determined as an image for generating a 3D panoramic image.
- the image converter 150 may then It is possible to estimate the photographing direction and position of the photographing apparatus 10 at the time when the 2D image is captured, and thus the movement trajectory of the photographing apparatus 10 can be determined based on the photographing direction and the position of the photographing apparatus 10. . That is, the image converting unit 150 may determine a coordinate value according to the movement trajectory of the imaging apparatus 10 in 3D, and the conventional movement is performed by the movement trajectory in which the error rate may be minimized based on the determined coordinate value. The trajectory can be modified.
- the modified movement trajectory may be a point at which the photographing apparatus 10 may capture 2D images in the reference direction and the reference position. Therefore, when the existing movement trajectory is deformed, the image converter 150 corrects and corrects the 2D image as a reference 2D image according to the degree of change of the coordinate value on the existing movement trajectory and the coordinate value on the modified movement trajectory. Based on the reference 2D image, the depth map corresponding to each of the pre-correction 2D images may be corrected to the depth map corresponding to each of the reference 2D images.
- the area setting unit 120 sets left and right eye regions for each of the corrected 2D images based on the corrected depth map. Can be.
- FIG. 4 is an exemplary diagram for setting a right eye image region based on a depth map of a 2D image in the image generating apparatus according to an embodiment of the present invention
- FIG. 5 is a 2D image in the image generating apparatus according to an embodiment of the present invention. It is an exemplary figure which sets to a left eye video area
- the region setting unit 120 analyzes depth values belonging to the first regions 411 and 421 among regions of the input first and second depth maps 410 and 420, respectively, and have a similar depth value.
- the area setting unit 120 may have a similar depth between the a region 411-1, the b region 411-2, and the c region 411-3 on the first region 411 of the first depth map 410. It can be divided into regions with values. Accordingly, the area setting unit 120 replaces the a region 411-1, the b region 411-2, and the c region 411-3 with similar depth values as the right eye image region of the first depth map 410. Can be set.
- the area setting unit 120 may have a similar depth between the d area 421-1, the e area 421-2, and the f area 421-3 on the first area 421 of the second depth map 420. It can be divided into regions with values. Therefore, the area setting unit 120 changes the d area 421-1, the e area 421-2, and the f area 421-3 having similar depth values to the right eye image area of the second depth map 410. Can be set. As such, when the right eye image area is set on the first areas 411 and 421 of each of the first and second depth maps 410 and 420, the controller 130 may include a first corresponding to each of the first and second depth maps 410 and 420.
- the controller 130 may determine the first and second depth images 430 and 420 based on the feature points of the first and second image images 430 and 440 obtained from the first and second 2D images respectively corresponding to the first and second depth maps 410 and 420.
- the right eye panoramic image 450 may be generated by synthesizing the second image images 430 and 440.
- the region setting unit 120 analyzes depth values belonging to the second regions 413 and 423 among the regions of the input first and second depth maps 410 and 420, respectively. Separate regions with values. That is, the area setting unit 120 may include a 'region 413-1, b' region 413-2, and c 'region 413-3 on the second region 413 of the first depth map 410. Can be separated into regions having similar depth values. Accordingly, the area setting unit 120 may include the a 'area 411-4, the b' area 411-5, and the c 'area 411-6 having similar depth values in the left eye of the first depth map 410. Can be set to the image area.
- the area setting unit 120 may include the d 'region 421-4, the e' region 421-5, and the f 'region 421-6 on the second region 423 of the second depth map 420. Can be separated into regions having similar depth values. Accordingly, the area setting unit 120 may include the d 'area 421-4, the e' area 421-5, and the f 'area 421-6 having similar depth values in the left eye of the second depth map 410. Can be set to the image area.
- the controller 130 may include a first corresponding to each of the first and second depth maps 410 and 420. And a first image image 460 and a second image image 470 corresponding to the left eye image area of the second 2D image. Subsequently, the controller 130 may determine the first and second depth images 460 and 470 based on the feature points of the first and second image images 460 and 470 obtained from the first and second 2D images corresponding to the first and second depth maps 410 and 420, respectively.
- the left eye panoramic image 480 may be generated by synthesizing the second video images 460 and 470.
- FIG. 6 is a block diagram of a photographing apparatus according to an exemplary embodiment.
- the photographing apparatus 10 includes a communication unit 610, an input unit 620, a photographing unit 630, an image processing unit 640, a panoramic image generating unit 650, a display unit 660, a storage unit 670, and a control unit ( 670).
- the communication unit 610 may receive a depth map of each of the plurality of 2D images generated from the external device (not shown) by performing data communication with the external device (not shown). In addition, the communication unit 610 may transmit a 3D panoramic image generated based on a plurality of 2D images by performing wired or wireless communication with an electronic device such as a smart TV or a tablet.
- the communication unit 610 may include a wireless communication module and a wired communication module.
- the wired communication module may be a USB communication module that provides an interface with an external device (not shown)
- the wireless communication module may include at least one of a short range communication module and a telecommunication module.
- the short range communication module may include at least one of a WIFI DIRECT communication module, a Bluetooth module, an infrared data association (IrDA) module, a near field communication (NFC) module, and a Zigbee module.
- the telecommunication module may include any one of a cellular communication module, a 3G (3rd generation) mobile communication module, a 4G (4th generation) mobile communication module, and a 4th generation Long Term Evolution (LTE) communication module.
- the input unit 620 may be configured to receive a user command and include at least one key button.
- the input unit 620 may be implemented as a touch screen on the display unit 650 to receive a user's touch command.
- the input unit 620 may receive a single photographing command, a panoramic photographing command, or the like through a key button or a touch screen, or a 3D panoramic image generation command for a plurality of 2D images continuously photographed according to the panoramic photographing command. Can be.
- the photographing unit 630 may perform single photographing or panoramic photographing according to a photographing command input through the input unit 620.
- the photographing unit 630 may include a lens, a shutter, an aperture, a solid-state imaging device, an analog front end (AFE), a timing generator (TG), and an image sensor.
- AFE analog front end
- TG timing generator
- the shutter adjusts the time when the light reflected on the subject enters the image sensor
- the aperture adjusts the amount of light incident on the lens by mechanically increasing or decreasing the size of the opening through which the light enters.
- the solid-state imaging device outputs an image by the photocharges as an electric signal.
- the TG outputs a timing signal for reading out pixel data of the solid-state imaging device, and the AFE samples and digitizes an electrical signal output from the solid-state imaging device.
- the photographing unit 630 may perform continuous photographing of a subject located in the photographing direction of the user. Since the configuration of the photographing unit 630 for capturing the image is a known technique, detailed description thereof will be omitted in the present invention.
- the image processor 640 makes the raw image data for each of the 2D images continuously photographed by the photographing unit 630 as YCbCr data, determines the image black level, and adjusts the sensitivity ratio for each color.
- the image processor 630 may perform white balance, gamma correction, color interpolation, color correction, resolution conversion, etc. on a plurality of consecutively photographed 2D images.
- the panoramic image generating unit 650 is the image generating apparatus 100 described above, and generates a 3D panoramic image based on a plurality of 2D images processed through the image processing unit 640 and depth maps corresponding to each of the plurality of 2D images. Create As described above, when the depth map corresponding to each of the plurality of 2D images and the plurality of 2D images is input, the panorama image generator 650 may include a left eye image area for each of the plurality of 2D images based on the plurality of depth maps; Sets the right eye image area.
- the panorama image generator 650 analyzes depth values of respective regions of the plurality of depth maps, and thus belongs to the first region of the image region of each of the 2D images corresponding to the region having similar depth values.
- the area may be set as the left eye image area, and the image area belonging to the second predetermined area may be set as the right eye image area.
- the panorama image generator 650 sets a plurality of image areas for each of the 2D images by using a color segmentation algorithm, and sets an image area belonging to the first area among the set image areas as the left eye image area.
- the image area belonging to the second preset area may be set as the right eye image area.
- the panorama image generator 650 synthesizes the image images of the left eye image areas set in the plurality of 2D images to generate a left eye panorama image.
- the panorama image generator 650 generates a right eye panorama image by synthesizing a video image of each right eye image region set in the plurality of 2D images.
- the panoramic image generator 650 extracts feature points from the plurality of 2D images, and synthesizes the image images of the plurality of left eye image regions based on the feature points of the image images of the plurality of left eye image regions among the extracted feature points.
- a left eye panoramic image can be generated.
- the panoramic image generator 650 may generate a right eye panoramic image by synthesizing the video images of the plurality of right eye image regions based on the feature points of the plurality of right eye image regions among the feature points extracted from the plurality of 2D images. Can be.
- the display unit 660 displays a 3D panoramic image generated from the captured 2D image or the plurality of 2D images.
- the display unit 120 may be implemented as a liquid crystal display (LCD), an organic light emitting diode (OLED), a plasma display panel (PDP), or the like.
- the storage unit 670 stores a 3D panoramic image generated from the captured 2D image or the plurality of 2D images.
- the storage unit 670 may be implemented as a storage medium such as a nonvolatile memory (eg, a flash memory, an electrically erasable ROM (EEROM)), a hard disk, or the like.
- a nonvolatile memory eg, a flash memory, an electrically erasable ROM (EEROM)
- EEROM electrically erasable ROM
- the controller 680 controls overall operations of the components of the photographing apparatus 10. In detail, when a panorama photographing command for the live view image displayed through the display unit 670 is input, the controller 680 controls to perform continuous photographing through the photographing unit 630 and controls the photographing unit 630.
- the image processor 640 may be controlled to perform image processing on the 2D image photographed continuously.
- the controller 680 transmits a depth map corresponding to each of the plurality of 2D images processed through the image processor 640 and the plurality of 2D images received through the communication unit 610, to the panorama image generator 650.
- the control unit 650 may control the panorama image generator 650 to generate 3D panorama images of the plurality of 2D images.
- FIG. 7 is a flowchart illustrating a method of generating a 3D panoramic image in an image generating apparatus according to an embodiment of the present invention.
- the image generating apparatus 100 receives a plurality of depth maps corresponding to a plurality of 2D images and a plurality of 2D images, respectively (S710).
- each of the plurality of 2D images is preferably overlapped with a part of the front and rear 2D image.
- the plurality of 2D images are images captured by the photographing apparatus 10, and the plurality of depth maps corresponding to each of the plurality of 2D images are generated in the image generating apparatus 100 or received from an external device (not shown).
- an external device (not shown) that generates a depth map corresponding to each of the plurality of 2D images may be a depth image photographing device.
- the depth image capturing apparatus may generate a depth map corresponding to each of the plurality of 2D images through at least one of a pattern projection method, a stereo camera method, and a time of flight method.
- the image generating apparatus 100 may acquire an image between 2D images corresponding to the photographing direction and the position of the photographing apparatus 10 estimated through the steps to be described later. Through matching, depth maps corresponding to the plurality of 2D images may be generated.
- the image generating apparatus 100 extracts a feature point from each of the plurality of 2D images (S720). Thereafter, the image generating apparatus 100 estimates the photographing direction and the position of the photographing apparatus 10 which photographed the plurality of 2D images (S730). According to an embodiment, the image generating apparatus 100 may estimate the photographing direction and the position of the photographing apparatus 10 based on at least one of the change information of the feature points extracted from the plurality of 2D images and the result measured by the sensor. .
- the senor is an inertial measurement unit (IMU) that detects an inertial force of a motion and provides various navigation related information such as acceleration, speed, direction, and distance of the photographing apparatus 10 as an inertial measurement target, and includes an acceleration sensor and a gyro. At least one of the sensor and the geomagnetic sensor.
- IMU inertial measurement unit
- the image generating apparatus 100 may determine the plurality of 2D images and the plurality of depth maps in consideration of the estimated estimation result.
- the reference image and the reference depth map which are acquired when the image is captured at the reference direction and the reference position are corrected (S740).
- the image generating apparatus 100 sets a left eye image area and a right eye image area for each of the plurality of 2D images based on the plurality of depth maps (S750).
- the image generating apparatus 100 may analyze depth values of regions of each of the plurality of depth maps, and may belong to a preset first region among image regions of 2D projections corresponding to regions having similar depth values.
- the image area may be set as the left eye image area, and the image area belonging to the second predetermined area may be set as the right eye image area.
- the image generating apparatus 100 sets a plurality of 2D image-specific image regions by using a color segmentation algorithm, and sets an image region belonging to a first predetermined region among the set image regions as a left eye image region.
- the image area belonging to the second predetermined area may be set as the right eye image area.
- the image generating apparatus 100 synthesizes a video image of each left eye image area set in the plurality of 2D images to produce a left eye panorama.
- An image is generated and a right eye panorama image is generated by synthesizing the video image of each of the right eye image regions set in the plurality of 2D images (S760).
- the image generating apparatus 100 generates a left eye panoramic image of the plurality of left eye image regions based on the feature points of the plurality of left eye image regions among the feature points extracted from each of the plurality of 2D images, and the plurality of right eyes.
- a right eye panoramic image for a plurality of right eye image regions may be generated based on feature points of respective image images of the image region.
- the image generating apparatus 100 generates a left eye panorama image by synthesizing the image images of the plurality of left eye image regions by using an image mosaicing algorithm, and synthesizing the image images of the plurality of right eye image regions, the right eye panorama You can create an image.
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Abstract
Description
Claims (15)
- 영상 생성 장치에서 3D 파노라마 이미지를 생성하는 방법에 있어서,복수의 2D 영상 및 상기 복수의 2D 영상에 대응되는 복수의 뎁스 맵을 입력받는 단계;상기 복수의 뎁스 맵에 기초하여, 상기 복수의 2D 영상 각각에 대해 좌안 영상 영역 및 우안 영상 영역을 설정하는 단계;상기 복수의 2D 영상 내에서 설정된 각 좌안 영상 영역의 영상 이미지를 합성하여 좌안 파노라마 이미지를 생성하고, 상기 복수의 2D 영상 내에서 설정된 각 우안 영상 영역의 영상 이미지를 합성하여 우안 파노라마 이미지를 생성하는 단계;를 포함하는 3D 파노라마 이미지 생성 방법.
- 제 1 항에 있어서,상기 복수의 2D 영상 중 적어도 하나의 2D 영상은,전후 2D 영상의 일부와 중첩되는 것을 특징으로 하는 3D 파노라마 이미지 생성 방법.
- 제 1 항에 있어서,상기 설정하는 단계는,상기 복수의 뎁스 맵 각각의 영역별 뎁스 값을 분석하여 유사한 뎁스 값을 가지는 영역과 대응되는 각각의 2D 영상의 영상 영역 중 기설정된 제1 영역에 속하는 영상 영역을 좌안 영상 영역으로 설정하고, 기설정된 제2 영역에 속하는 영상 영역을 우안 영상 영역으로 설정하는 것을 특징으로 하는 3D 파노라마 이미지 생성방법.
- 제 1 항에 있어서,상기 설정하는 단계는,컬러 세그멘테이션 알고리즘을 이용하여 상기 복수의 2D 영상별 영상 영역을 설정하고, 상기 설정된 영상 영역 중 기설정된 제1 영역에 속하는 영상 영역을 좌안 영상 영역으로 설정하고, 기설정된 제2 영역에 속하는 영상 영역을 우안 영상 영역으로 설정하는 것을 특징으로 하는 3D 파노라마 이미지 생성방법.
- 제 1 항에 있어서,상기 복수의 2D 영상으로부터 특징점을 추출하는 단계;를 더 포함하며,상기 생성하는 단계는,상기 복수의 좌안 영상 영역의 영상 이미지별 특징점에 기초하여 상기 복수의 좌안 영상 영역에 대한 좌안 파노라마 이미지를 생성하고,상기 복수의 우안 영상 영역의 영상 이미지별 특징점에 기초하여 상기 복수의 우안 영상 영역에 대한 우안 파노라마 이미지를 생성하는 것을 특징으로 하는 3D 파노라마 이미지 생성 방법.
- 제 5 항에 있어서,상기 복수의 2D 영상을 촬영한 상기 촬영 장치의 촬영 방향 및 위치를 추정하는 단계; 및상기 추정 결과를 고려하여, 상기 복수의 2D 영상 및 상기 복수의 뎁스 맵을 상기 촬영 장치가 기준 방향 및 기준 위치에서 촬영하였을 때 획득 가능한 기준 영상 및 기준 뎁스 맵으로 보정하는 단계;를 더 포함하며,상기 설정하는 단계는,상기 보정된 기준 뎁스 맵에 기초하여 상기 보정된 복수의 2D 영상 각각에 대해 좌안 및 우안 영상 영역을 설정하는 것을 특징으로 하는 3D 파노라마 이미지 생성 방법.
- 제 6 항에 있어서,상기 추정하는 단계는,상기 복수의 2D 영상으로부터 추출한 특징점들의 변화 정보 및 센서를 통해 측정된 결과 중 적어도 하나에 기초하여 상기 촬영 장치의 촬영 방향 및 위치를 추정하며,상기 센서는관성 측정 센서(Inertial Measurement Unit : IMU)인 것을 특징으로 하는 3D 파노라마 이미지 생성 방법.
- 제 7 항에 있어서,상기 복수의 2D 영상에 대응되는 뎁스 맵이 입력되지 않으면, 상기 센서를 통해 측정된 결과에 기초하여 추정된 상기 촬영 장치의 방향 및 위치에 대응되는 2D 영상 간의 영상 정합(Stereo Matching)을 통해 상기 복수의 2D 영상에 대응되는 뎁스 맵을 생성하는 단계;를 더 포함하는 것을 특징으로 하는 3D 파노라마 이미지 생성 방법.
- 제 1 항에 있어서,상기 생성하는 단계는,영상 모자이킹 알고리즘을 이용하여 상기 복수의 좌안 영상 영역의 영상 이미지를 합성하고, 상기 복수의 우안 영상 영역의 영상 이미지의 영상 이미지를 합성하는 것을 특징으로 하는 3D 파노라마 이미지 생성 방법.
- 영상 생성 장치에 있어서,복수의 2D 영상 및 상기 복수의 2D 영상에 대응되는 복수의 뎁스 맵을 입력받는 영상 입력부;상기 복수의 뎁스 맵에 기초하여, 상기 복수의 2D 영상 각각에 대해 좌안 영상 영역 및 우안 영상 영역을 설정하는 영역 설정부; 및상기 복수의 2D 영상 내에서 설정된 각 좌안 영상 영역의 영상 이미지를 합성하여 좌안 파노라마 이미지를 생성하고, 상기 복수의 2D 영상 내에서 설정된 각 우안 영상 영역의 영상 이미지를 합성하여 우안 파노라마 이미지를 생성하는 제어부;를 포함하는 영상 생성 장치.
- 제 10 항에 있어서,상기 복수의 2D 영상 중 적어도 하나의 2D 영상은,전후 2D 영상의 일부와 중첩되는 것을 특징으로 하는 영상 생성 장치.
- 제 10 항에 있어서,상기 영역 설정부는,상기 복수의 뎁스 맵 각각의 영역별 뎁스 값을 분석하여 유사한 뎁스 값을 가지는 영역과 대응되는 각각의 2D 영상의 영상 영역 중 기설정된 제1 영역에 속하는 영상 영역을 좌안 영상 영역으로 설정하고, 기설정된 제2 영역에 속하는 영상 영역을 우안 영상 영역으로 설정하는 것을 특징으로 하는 영상 생성 장치.
- 제 10 항에 있어서,상기 영역 설정부는,컬러 세그멘테이션 알고리즘을 이용하여 상기 복수의 2D 영상별 영상 영역을 설정하고, 상기 설정된 영상 영역 중 기설정된 제1 영역에 속하는 영상 영역을 좌안 영상 영역으로 설정하고, 기설정된 제2 영역에 속하는 영상 영역을 우안 영상 영역으로 설정하는 것을 특징으로 하는 영상 생성 장치.
- 제 10 항에 있어서,상기 제어부는,상기 복수의 2D 영상으로부터 특징점을 추출하며, 상기 추출된 특징점 중 상기 복수의 좌안 영상 영역의 영상 이미지별 특징점에 기초하여 상기 복수의 좌안 영상 영역에 대한 좌안 파노라마 이미지를 생성하고, 상기 복수의 우안 영상 영역의 영상 이미지별 특징점에 기초하여 상기 복수의 우안 영상 영역에 대한 우안 파노라마 이미지를 생성하는 것을 특징으로 하는 영상 생성 장치.
- 제 14 항에 있어서,상기 복수의 2D 영상을 촬영한 촬영 장치의 촬영 방향 및 위치를 추정하는 위치 추정부; 및상기 위치 추정부로부터 추정된 추정 결과를 고려하여, 상기 복수의 2D 영상 및 상기 복수의 뎁스 맵을 상기 촬영 장치가 기준 방향 및 기준 위치에서 촬영하였을 때 획득 가능한 기준 영상 및 기준 뎁스 맵으로 보정하는 영상 변환부;를 더 포함하며,상기 영역 설정부는,상기 보정된 기준 뎁스 맵에 기초하여 상기 보정된 복수의 2D 영상 각각에 대해 좌안 및 우안 영상 영역을 설정하는 것을 특징으로 하는 영상 생성 장치.
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| US15/514,153 US10559063B2 (en) | 2014-09-26 | 2015-09-23 | Image generating apparatus and method for generation of 3D panorama image |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20160036985A (ko) | 2016-04-05 |
| US10559063B2 (en) | 2020-02-11 |
| EP3200452A4 (en) | 2017-10-18 |
| CN105472372B (zh) | 2018-06-22 |
| JP6679577B2 (ja) | 2020-04-15 |
| EP3200452A1 (en) | 2017-08-02 |
| KR102249831B1 (ko) | 2021-05-10 |
| CN105472372A (zh) | 2016-04-06 |
| JP2018500778A (ja) | 2018-01-11 |
| US20170293998A1 (en) | 2017-10-12 |
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