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Denoising device and method for sequence image

A technology of sequential images and images, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of poor denoising effect and large amount of calculation, and achieve the effect of improving image quality and removing noise

Active Publication Date: 2016-12-21
杭州雄迈集成电路技术股份有限公司
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Problems solved by technology

[0007] The purpose of the present invention is to provide a denoising device and method for sequence images in order to solve the defects in the prior art that the denoising algorithm has a large amount of calculation and the denoising effect is not good. Separation of moving objects and noise in images, denoising sequence images, reducing motion smears and afterimages, retaining original details, and improving image quality

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  • Denoising device and method for sequence image
  • Denoising device and method for sequence image
  • Denoising device and method for sequence image

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Embodiment 1

[0085] A sequential image denoising method,

[0086] 1) if figure 1 As shown, the Bayer data image input in the input image unit, the Bayer data is divided into R line and B line, the data of R line is a continuous value such as RGRG, the data of B line is a continuous value such as GBGB, each R and B The up, down, left, and right are all G, so the brightness Y of the current point can be calculated by 3*4 sliding filtering. The filter coefficient can be configured, and the typical filter coefficient is as follows.

[0087] c o e f = 1 2 1 2 4 2 1 2 1 ...

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Abstract

The invention relates to a denoising device and a denoising method for sequence image. The denoising device comprises an input image unit, a motion estimation unit, a time-space domain federated filtering unit and a noise estimation module, wherein the input image unit inputs the sequence image to the motion estimation unit, and the sequence image is processed by the motion estimation unit and then input to the time-space domain federated filtering unit for processing; the noise estimation module outputs data to the motion estimation unit for processing; the motion estimation unit comprises a space domain filtering module, a differential module, a differential image fusion module, a morphological processing module and a motion estimation module; the space domain filtering module carries out filtering processing on the image and then transmits the image to the differential module for difference operation; and the differential image fusion module carries out weighting fusion processing on the image of the previous module, and the image is further processed by the morphological processing module and then transmitted to the motion estimation module for motion estimation operation after processing. The denoising device and the denoising method effectively complete the separation of a moving object and noise in the sequence image, effectively eliminate the noise, and improve the image quality.

Description

technical field [0001] The invention relates to video image processing and video communication technology, in particular to a method and device for adaptively denoising video images, belonging to the technical field of image processing. Background technique [0002] A sequence of images is a series of images that are sequentially and continuously acquired for the target at different times and in different orientations. In the process of image acquisition, transmission, storage, etc., the image quality is often reduced due to the interference of various noises, which has an adverse effect on subsequent image processing. Therefore, image noise reduction plays a decisive role in image quality. In reality, digital images are often affected by imaging equipment and external environmental noise interference during digitization and transmission. Therefore, in order to improve the image quality, it is necessary to reduce the noise in the image. There are many kinds of noises, which...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T3/40
CPCG06T3/4038G06T2207/20192G06T2207/20201G06T5/70
Inventor 王军陈阳陈咏尚宇盟
Owner 杭州雄迈集成电路技术股份有限公司
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