WO2006026902A1 - Procede de synthese d'une image dynamique couleur par systeme ccd/cmos monochrome - Google Patents

Procede de synthese d'une image dynamique couleur par systeme ccd/cmos monochrome Download PDF

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Publication number
WO2006026902A1
WO2006026902A1 PCT/CN2005/000820 CN2005000820W WO2006026902A1 WO 2006026902 A1 WO2006026902 A1 WO 2006026902A1 CN 2005000820 W CN2005000820 W CN 2005000820W WO 2006026902 A1 WO2006026902 A1 WO 2006026902A1
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WO
WIPO (PCT)
Prior art keywords
image
light
color
light source
ccd
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2005/000820
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English (en)
Chinese (zh)
Inventor
Richard Yeung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motic China Group Co Ltd
Original Assignee
Motic China Group Co Ltd
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Filing date
Publication date
Application filed by Motic China Group Co Ltd filed Critical Motic China Group Co Ltd
Publication of WO2006026902A1 publication Critical patent/WO2006026902A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • H04N23/12—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with one sensor only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2209/00—Details of colour television systems
    • H04N2209/04—Picture signal generators
    • H04N2209/041—Picture signal generators using solid-state devices
    • H04N2209/042—Picture signal generators using solid-state devices having a single pick-up sensor
    • H04N2209/044—Picture signal generators using solid-state devices having a single pick-up sensor using sequential colour illumination

Definitions

  • the present invention relates to a method for obtaining a high-definition, high-speed dynamic color image, and more particularly to a method for synthesizing a color moving image in a monochrome CCD/CMOS system. Background technique
  • the high-end camera system in order to obtain images with higher resolution and richer colors, the high-end camera system generally adopts a 3-CCD system, and three CCDs respectively sense R red light, G green light, and B blue light, and simultaneously capture three frames of images. Then, the three frames of image are combined into one frame of the color image.
  • This kind of scheme can achieve good results, but the system is complicated and expensive. Summary of the invention
  • the present invention provides a method of synthesizing a color moving image in a monochrome CCD/CMOS system to obtain image quality and display speed similar to that of a 3-CCD system, and to simplify the system and reduce the price.
  • the method of synthesizing color dynamic images in a monochrome CCD/CMOS system firstly lights up three light sources in sequence, and only one light source is turned on at any time, and image capturing is performed when the light source is lit, and the three light sources are sequentially illuminated once. Three frames of images are obtained, which are respectively illuminated by R red light, G green light, and B blue light source; and then three frames of images are combined into one color image by a synthesis algorithm to obtain a color dynamic image.
  • Step one the red light is on, take a picture, get a frame image, the red light goes out, go to step two;
  • Step 2 the green light is on, take a picture, get a frame image, the green light goes out, go to step 3;
  • Step 3 basket The light is illuminated, photographed, and a frame image is obtained, and the basket light is extinguished, and the process returns to step 1.
  • the three-frame image is combined into one color image by a synthesis algorithm to obtain a color dynamic image.
  • the present invention uses only a single monochrome camera system (CCD/CMOS) to dynamically combine three monochromatic images into a color image in real time under R red, G green, and B blue light illumination systems.
  • the speed is exactly the same as the speed of the CCD/CMOS itself, achieving the same image quality and display speed as the 3-CCD system.
  • Figure 1 is a schematic view of an image synthesizing method of the present invention
  • Figure 2 is a general flow chart
  • FIG. 3 is a flow chart of the present invention.
  • FIG. 4 is a schematic diagram of a fast image synthesis method under computer control
  • Figure 5 is a schematic view showing an example of application of the present invention to a digital biological microscope
  • FIG. 6 is a schematic diagram of an optical path principle of the present invention applied to a digital biological microscope
  • Figure 7 is a schematic view showing the implementation of the light source control circuit of the present invention.
  • Fig. 8 is a view showing the connection relationship between the CCD/CMOS digital camera system and the light source system of the present invention. detailed description
  • the ordinary synthesis method is shown in Figure 2. It is repeated steps one to three, R, G, B-cycles, to obtain three frames of monochrome images, to synthesize one; then wait for R, G, B-cycles, Synthesize the second one.
  • the time of two compositing is the time of one RGB cycle.
  • the present invention adopts a new method as shown in Figs. 1 and 3-7.
  • the speed of synthesis depends entirely on the speed of the CCD. If the speed of the CCD can reach 30 frames/second, the speed of the composite image is also 30 frames/second.
  • the R, G, and B illuminations are sequentially illuminated to obtain three frames of monochrome images, and the first frame of the color image is synthesized; then, instead of waiting for RGB-cycles, when the R illumination is lit, the R-frame image is acquired, and Combine with the previously acquired G frame image and B frame image to synthesize the second frame image; then the G illumination is lit, and the G frame image is acquired, merged with the most recent B frame and R frame image, and the second image is synthesized. Frame image.
  • the CCD has a maximum speed of 30 frames/second and an interval of 0.33 seconds per frame.
  • the composite image is spaced 0.33 seconds per frame (same speed as the CCD itself), and the composite speed is 30 frames/second.
  • the light source may not be turned on when the image is captured, or the image under the R light source needs to be captured, and G is lit.
  • CCD/CMOS also requires a certain exposure time, and the light source should be lit for a long enough time to ensure sufficient exposure of the CCD/CMOS. It takes a certain time for the light source to go from stable to stable operation, and it is necessary to wait until the light source is stable before starting to capture images. Based on the above considerations, the present invention designs the following scheme:
  • the computer sends commands to control the CCD/CMOS operation.
  • the CCD/CMOS captures a frame of image, it sends a message to the computer, the computer switches the light source, receives the image data, and uses the receiver.
  • the time of the data waits for the light source to work stably.
  • the light source is also stable.
  • the computer can command the CCD/CMOS to prepare to capture the next frame image, and start processing the data combination and display.
  • the CCD/CMOS uses this time exposure. After the computer processing is completed, the CCD/CMOS has prepared the new image data, and will send a message to the computer to repeat the above process.
  • the above control process is based on computer control, and the illumination of the light source and the CCD/CMOS capture are all controlled by the computer. Programmatically controlling these actions to coordinate can effectively avoid mismatches.
  • some steps that do not affect each other take a parallel approach. For example, the time taken to merge images with a computer allows the CCD/CMOS to capture the next frame image; the time it takes for the computer to receive CCD/CMOS data to wait for the source to operate stably.
  • the technique of the present invention is applied to an example of a digital biological microscope, see the system block diagram shown in FIG.
  • the digital biological microscope uses a monochrome 1.3 megapixel CCD camera system, and the light source part uses three 1W LEDs, one for each of R, G, and B.
  • the light source control circuit uses a single-chip control (P89c51) to communicate with the computer via the RS232 serial communication protocol.
  • the computer can issue commands to control the on and off of the three LEDs, and can separately control the brightness of the RGB LEDs. By changing the ratio of the brightness of the three LEDs of RGB, a light source of any color temperature can be generated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Image Input (AREA)
  • Color Television Image Signal Generators (AREA)
  • Image Processing (AREA)
  • Studio Devices (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

Cette invention concerne un procédé qui sert à synthétiser une image dynamique couleur par système CCD/CMOS monochrome et qui consiste à cet effet: d'abord à allumer une source de trois points lumineux séquentiellement, avec un seul point lumineux allumé en même temps; à capturer l'image, lorsque la source lumineuse est allumée; à allumer chaque source lumineuse une seule fois dans la séquence temporelle et à obtenir trois trames d'images, c'est-à-dire les images émises dans la lumière rouge, verte et bleue respectivement; et à synthétiser les trois trames d'images en une seule image couleur, c'est-à-dire une image dynamique couleur, par algorithme de synthèse. Cette invention permet d'obtenir la même qualité d'image et la même vitesse d'affichage qu'un système de type 3-CCD et elle permet de simplifier le système et de réduire les coûts.
PCT/CN2005/000820 2004-09-09 2005-06-09 Procede de synthese d'une image dynamique couleur par systeme ccd/cmos monochrome Ceased WO2006026902A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200410051458.6 2004-09-09
CNB2004100514586A CN100490540C (zh) 2004-09-09 2004-09-09 单色ccd／cmos系统合成彩色动态图象的方法

Publications (1)

Publication Number Publication Date
WO2006026902A1 true WO2006026902A1 (fr) 2006-03-16

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Application Number Title Priority Date Filing Date
PCT/CN2005/000820 Ceased WO2006026902A1 (fr) 2004-09-09 2005-06-09 Procede de synthese d'une image dynamique couleur par systeme ccd/cmos monochrome

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Country Link
CN (1) CN100490540C (fr)
WO (1) WO2006026902A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114785929A (zh) * 2022-04-20 2022-07-22 Oppo广东移动通信有限公司 摄像头和电子装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102572449A (zh) * 2012-02-28 2012-07-11 王锦峰 基于rgb三基色的图像处理装置及方法
CN102572448A (zh) * 2012-02-28 2012-07-11 王锦峰 基于rwb三色光拍摄彩色图像的装置及方法
JP6244945B2 (ja) * 2014-01-29 2017-12-13 セイコーエプソン株式会社 電子機器
JP6330363B2 (ja) * 2014-02-26 2018-05-30 セイコーエプソン株式会社 電子機器及び電子機器の制御方法
FR3079937B1 (fr) * 2018-04-06 2021-07-09 Coeur De Jeu Dispositif de capture d’images multiples presentant chacune une exposition a la lumiere differente.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0865690A (ja) * 1994-08-24 1996-03-08 Sony Tektronix Corp カラー静止画像撮影装置
JPH08130748A (ja) * 1994-10-31 1996-05-21 Sony Tektronix Corp カラー静止画像撮影装置
CN1356577A (zh) * 2001-07-26 2002-07-03 三星电子株式会社 单面板彩色图像显示装置
JP2004072308A (ja) * 2002-08-05 2004-03-04 Fuji Photo Film Co Ltd 面順次発光ストロボ付きデジタルカメラ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0865690A (ja) * 1994-08-24 1996-03-08 Sony Tektronix Corp カラー静止画像撮影装置
JPH08130748A (ja) * 1994-10-31 1996-05-21 Sony Tektronix Corp カラー静止画像撮影装置
CN1356577A (zh) * 2001-07-26 2002-07-03 三星电子株式会社 单面板彩色图像显示装置
JP2004072308A (ja) * 2002-08-05 2004-03-04 Fuji Photo Film Co Ltd 面順次発光ストロボ付きデジタルカメラ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114785929A (zh) * 2022-04-20 2022-07-22 Oppo广东移动通信有限公司 摄像头和电子装置

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CN1747555A (zh) 2006-03-15
CN100490540C (zh) 2009-05-20

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