WO2023284236A1 - 图像盲去噪方法、装置、电子设备和存储介质 - Google Patents
图像盲去噪方法、装置、电子设备和存储介质 Download PDFInfo
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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
- G06T5/70—Denoising; Smoothing
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/04—Architecture, e.g. interconnection topology
- G06N3/0464—Convolutional networks [CNN, ConvNet]
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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
- G06T5/60—Image enhancement or restoration using machine learning, e.g. neural networks
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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
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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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
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/81—Camera processing pipelines; Components thereof for suppressing or minimising disturbance in the image signal generation
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20024—Filtering details
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20081—Training; Learning
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20084—Artificial neural networks [ANN]
Definitions
- Blind denoising refers to a denoising algorithm that can better denoise input images with different noise levels.
- the combination of noise level estimation and denoising algorithm is still adopted to ensure blind denoising capability.
- a combination of image noise calibration and traditional filtering is used to determine the target noise parameters of the image to be denoised in the image noise calibration, wherein the target noise parameters are used to characterize the image acquisition equipment Noise model introduced to the acquired image. Since the sensors in different types of image acquisition devices are different, the noise models also have certain differences. Therefore, in the embodiment of the present application, image noise calibration is performed on different types of image acquisition devices in advance to obtain their corresponding noise models. characterize the noise. In the embodiment of the present application, it is only necessary to pre-calibrate once for each type of image acquisition device. After the calibration is completed, the noise model of this type of image acquisition device is determined, and no repeated calibration is required.
- the primary filtering process of the image to be denoised is to smooth the image and eliminate the interference of noise on the calculation of noise level estimation.
- the image noise level expression of the image acquisition device is the functional relationship between the pixel brightness value and the pixel variance, so to determine the pixel variance of the image to be denoised, it is necessary to determine the pixel brightness Value, that is, to eliminate the interference factor of noise in the pixel value.
- This step does not have high requirements on the image denoising effect, so a simple and efficient conventional image filtering method can be used.
- the preliminary filtering method here may be Gaussian filtering, mean filtering, median filtering, bilateral filtering, guided filtering, etc., which are not limited here.
- step 103 includes:
- step 104 includes:
- the image to be denoised and the noise level map are combined and input to a preset image noise removal network for denoising processing.
- the image noise removal network utilizes the noise level distribution information of the image to be denoised, and can achieve a better blind denoising effect when denoising the image to be denoised.
- the image size of the final blind denoising result of the image to be denoised is consistent with the size of the input image to be denoised.
- image noise level estimation is realized by combining image noise calibration with traditional filtering, which improves the efficiency of image noise level estimation, and reduces the overall complexity of the blind denoising method while maintaining the blind denoising effect, thereby Reduce the difficulty of deploying blind denoising methods on platforms with limited computing power such as front-end image acquisition equipment.
- image noise level estimation is realized by combining image noise calibration with traditional filtering, which improves the efficiency of image noise level estimation, and reduces the overall complexity of the blind denoising method while maintaining the blind denoising effect, thereby Reduce the difficulty of deploying blind denoising methods on platforms with limited computing power such as front-end image acquisition equipment.
- the calibration data acquisition unit is configured to acquire at least two pieces of image data to be calibrated for the same photographing scene through the image acquisition device under each candidate exposure gain value; wherein, the candidate exposure gain value includes at least one;
- x represents the target pixel brightness value of the target pixel point
- V(x) represents the noise variance used to characterize the noise level of the target pixel point
- n represents the series of polynomials
- a i is the noise parameter to be calibrated
- the image noise calibration result includes at least one candidate exposure gain value and an associated candidate noise parameter
- the image noise parameter determination module is set as:
- a target noise parameter associated with the target noise parameter is determined according to the associated candidate noise parameter.
- the noise level estimation module is set to:
- xp represents the pixel value of the target pixel in the preliminary filtered image
- Vp represents the noise level of the pixel associated with the target pixel in the preliminary filtered image in the image to be denoised
- n represents the polynomial Series
- a x, i is the target noise parameter of the image to be denoised
- the image size of the preliminary filtered image is the same as that of the image to be denoised
- the noise level of each pixel is determined according to the target noise parameter and the pixel value of each pixel in the preliminary filtered image, and a noise level map is obtained, which is the image to be denoised.
- the blind denoising module is set to:
- Denoising is performed on the merged image based on a pre-trained image noise removal network to obtain a final blind denoising result of the image to be denoised.
- the preliminary filtering process adopts Gaussian filtering, mean filtering, median filtering, bilateral filtering method or guided filtering method.
- the blind image denoising device provided in the embodiment of the present application can execute the blind image denoising method provided in any embodiment of the present application, and has corresponding functional modules and beneficial effects for performing the blind image denoising method.
- FIG. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
- FIG. 3 shows a block diagram of an exemplary electronic device 12 suitable for implementing embodiments of the present application.
- the electronic device 12 shown in FIG. 3 is only an example, and should not limit the functions and scope of use of this embodiment of the present application.
- electronic device 12 takes the form of a general-purpose computing device.
- Components of electronic device 12 may include, but are not limited to: one or more processors or processing units 16, system storage 28, bus 18 connecting various system components including system storage 28 and processing unit 16.
- Bus 18 represents one or more of several types of bus structures, including a storage device bus or controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures.
- bus structures include, by way of example, but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect ( PCI) bus.
- ISA Industry Standard Architecture
- MAC Micro Channel Architecture
- VESA Video Electronics Standards Association
- PCI Peripheral Component Interconnect
- Electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by electronic device 12 and include both volatile and nonvolatile media, removable and non-removable media.
- System storage 28 may include computer system readable media in the form of volatile storage, such as random access storage (RAM) 30 and/or cache storage 32 .
- the electronic device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media.
- storage system 34 may be configured to read and write to non-removable, non-volatile magnetic media (not shown in FIG. 3, commonly referred to as a "hard drive”).
- a disk drive for reading and writing to removable non-volatile disks e.g. "floppy disks”
- removable non-volatile optical disks e.g. CD-ROM, DVD-ROM or other optical media
- each drive may be connected to bus 18 via one or more data media interfaces.
- the storage device 28 may include at least one program product having a set (eg, at least one) of program modules configured to perform the functions of various embodiments of the present application.
- a program/utility tool 40 having a set (at least one) of program modules 42 such as but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include the implementation of the network environment.
- the program modules 42 generally perform the functions and/or methods of the embodiments described herein.
- Electronic device 12 may also communicate with one or more external devices 14 (e.g., a keyboard, pointing device, display 24, etc.), and with one or more devices that enable a user to interact with The device 12 is capable of communicating with any device (eg, network card, modem, etc.) that communicates with one or more other computing devices. Such communication may occur through input/output (I/O) interface 22 .
- the electronic device 12 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and/or a public network such as the Internet) through the network adapter 20 .
- network adapter 20 communicates with other modules of electronic device 12 via bus 18 .
- other hardware and/or software modules may be used in conjunction with electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape Drives and data backup storage systems, etc.
- the embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored.
- the program is executed by a processor, the image blind denoising method provided in the embodiment of the present application is implemented, including:
- the computer storage medium in the embodiments of the present application may use any combination of one or more computer-readable media.
- the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
- a computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer readable storage media include: electrical connections with one or more leads, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), Erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.
- a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
- the computer readable storage medium may be a non-transitory computer
- a computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave traveling as a data signal. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
- a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .
- Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
- Computer program code for carrying out the operations of the present application may be written in one or more programming languages or combinations thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional process programming language such as "C" or a similar programming language.
- the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
- the remote computer may be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g. via the Internet using an Internet Service Provider). .
- LAN local area network
- WAN wide area network
- Internet Service Provider e.g. via the Internet using an Internet Service Provider
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Abstract
Description
Claims (10)
- 一种图像盲去噪方法,包括:根据预先对待去噪图像的图像采集设备进行图像噪声标定得到的图像噪声标定结果,确定所述待去噪图像的目标噪声参数;对所述待去噪图像进行初步滤波处理,得到所述待去噪图像的初步滤波图像;根据所述目标噪声参数和所述初步滤波图像确定所述待去噪图像的噪声水平估计结果;根据所述噪声水平估计结果对所述待去噪图像进行最终去噪处理,得到所述待去噪图像的最终盲去噪结果。
- 根据权利要求1所述的方法,其中,所述预先对待去噪图像的图像采集设备进行图像噪声标定,包括:在每个候选曝光增益值下通过所述图像采集设备对同一拍照场景采集至少两张待标定图像的数据;其中,所述候选曝光增益值包括至少一个;根据所述每个候选曝光增益值关联的所述至少两张待标定图像的数据确定所述每个候选曝光增益值的候选噪声参数,由所述每个候选曝光增益值和所述每个候选曝光增益值关联的候选噪声参数确定所述图像采集设备的图像噪声标定结果。
- 根据权利要求2所述的方法,其中,所述根据所述每个候选曝光增益值关联的所述至少两张待标定图像的数据确定所述每个候选曝光增益值的候选噪声参数,包括:确定所述图像采集设备的图像噪声水平表达式为: 其中,x表示目标像素点的目标像素亮度值,V(x)表示用于表征所述目标像素点噪声水平的噪声方差,n表示多项式的级数,a i为待标定噪声参数,表示所述每个候选曝光增益值下待标定的第i阶噪声参数;其中,n为整数,n≥1,0≤i≤n;根据所述每个候选曝光增益值关联的所述至少两张待标定图像的数据在每个像素点上的像素平均值,确定平均标定图像;根据所述每个候选曝光增益值关联的所述至少两张待标定图像的数据在每个像素点上的像素值方差,确定方差标定图像;从所述平均标定图像和所述方差标定图像中确定至少n+1个像素值不同的像素对,将基于所述图像噪声水平表达式根据所述像素对确定所述待标定噪声 参数的值作为所述每个候选曝光增益值的候选噪声参数。
- 根据权利要求1所述的方法,其中,所述图像噪声标定结果包括至少一个候选曝光增益值和所述至少一个候选曝光增益值中的每个候选曝光增益值关联的候选噪声参数;所述根据预先对待去噪图像的图像采集设备进行图像噪声标定得到的图像噪声标定结果,确定所述待去噪图像的目标噪声参数,包括:确定所述图像采集设备在采集所述待去噪图像时的目标曝光增益值;基于所述目标曝光增益值与所述至少一个候选曝光增益值的关系,根据所述至少一个候选曝光增益值关联的候选噪声参数确定与所述目标噪声参数关联的目标噪声参数。
- 根据权利要求1所述的方法,其中,所述根据所述目标噪声参数和所述初步滤波图像确定所述待去噪图像的噪声水平估计结果,包括:确定所述图像采集设备的图像噪声水平表达式为: 其中,x p表示所述初步滤波图像中目标像素点的像素值,V p表示所述待去噪图像中与所述初步滤波图像中目标像素点关联的像素点的噪声水平,n表示多项式的级数,a x,i为所述待去噪图像的目标噪声参数;其中,所述初步滤波图像与所述待去噪图像的图像大小相同;其中,n为整数,且n≥1,0≤i≤n;基于所述图像噪声水平表达式,根据所述目标噪声参数和所述初步滤波图像中每个像素点的像素值确定所述每个像素点的噪声水平,得到噪声水平图,将所述噪声水平图作为所述待去噪图像的噪声水平估计结果。
- 根据权利要求5所述的方法,其中,所述根据所述噪声水平估计结果对所述待去噪图像进行最终去噪处理,得到所述待去噪图像的最终盲去噪结果,包括:将所述噪声水平图与所述待去噪图像在通道维度上进行拼接,得到合并图像;基于预先训练的图像噪声去除网络对所述合并图像进行去噪处理,得到所述待去噪图像的最终盲去噪结果。
- 根据权利要求1所述的方法,其中,所述初步滤波处理采用高斯滤波、均值滤波、中值滤波、双边滤波或导向滤波。
- 一种图像盲去噪装置,包括:图像噪声参数确定模块,设置为根据预先对待去噪图像的图像采集设备进行图像噪声标定得到的图像噪声标定结果,确定所述待去噪图像的目标噪声参数;图像初步滤波模块,设置为对所述待去噪图像进行初步滤波处理,得到所述待去噪图像的初步滤波图像;噪声水平估计模块,设置为根据所述目标噪声参数和所述初步滤波图像确定所述待去噪图像的噪声水平估计结果;盲去噪模块,设置为根据所述噪声水平估计结果对所述待去噪图像进行最终去噪处理,得到所述待去噪图像的最终盲去噪结果。
- 一种电子设备,包括:至少一个处理器;存储装置,设置为存储至少一个程序,当所述至少一个程序被所述至少一个处理器执行,使得所述至少一个处理器实现如权利要求1-7中任一所述的图像盲去噪方法。
- 一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现如权利要求1-7中任一所述的图像盲去噪方法。
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| EP21950008.9A EP4372671A4 (en) | 2021-07-15 | 2021-12-08 | Blind image denoising method and device, electronic device and storage medium |
| US18/579,149 US20240323548A1 (en) | 2021-07-15 | 2021-12-08 | Blind image denoising method, electronic device, and storage medium |
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| CN120318112A (zh) * | 2025-06-17 | 2025-07-15 | 自然资源部第二海洋研究所 | 国产海洋卫星影像噪声处理方法、装置、电子设备和存储介质 |
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| US20240169497A1 (en) * | 2022-11-23 | 2024-05-23 | Samsung Electronics Co., Ltd. | Airy-Disk Correction for Deblurring an Image |
| CN116109524B (zh) * | 2023-04-11 | 2023-06-16 | 中国医学科学院北京协和医院 | 磁共振图像通道合并方法、装置、电子设备及存储介质 |
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| CN112513936A (zh) * | 2019-11-29 | 2021-03-16 | 深圳市大疆创新科技有限公司 | 图像处理方法、装置及存储介质 |
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| KR100759517B1 (ko) * | 2006-06-23 | 2007-09-18 | 삼성전기주식회사 | 디지털 영상 노이즈 제거장치 및 방법 |
| US8355063B2 (en) * | 2010-09-27 | 2013-01-15 | Sharp Laboratories Of America, Inc. | Camera noise reduction for machine vision systems |
| CN110766632A (zh) * | 2019-10-22 | 2020-02-07 | 广东启迪图卫科技股份有限公司 | 基于通道注意力机制和特征金字塔的图像去噪方法 |
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| CN104504700A (zh) * | 2014-12-19 | 2015-04-08 | 成都品果科技有限公司 | 一种获取图像传感器噪声水平曲线的方法及系统 |
| US20180025474A1 (en) * | 2016-07-20 | 2018-01-25 | Alibaba Group Holding Limited | Video processing method and apparatus |
| CN109285129A (zh) * | 2018-09-06 | 2019-01-29 | 哈尔滨工业大学 | 基于卷积神经网络的图像真实噪声去除系统 |
| CN112513936A (zh) * | 2019-11-29 | 2021-03-16 | 深圳市大疆创新科技有限公司 | 图像处理方法、装置及存储介质 |
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| CN120318112A (zh) * | 2025-06-17 | 2025-07-15 | 自然资源部第二海洋研究所 | 国产海洋卫星影像噪声处理方法、装置、电子设备和存储介质 |
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| Publication number | Publication date |
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| CN115619652A (zh) | 2023-01-17 |
| EP4372671A4 (en) | 2025-06-25 |
| EP4372671A1 (en) | 2024-05-22 |
| US20240323548A1 (en) | 2024-09-26 |
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