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Video image self-adaptive contrast enhancement method and device

A technology of video image and enhancement device, which is applied in the directions of image enhancement, image analysis, image data processing, etc., can solve the problems of high cost of hardware implementation, complex CLAHE algorithm, etc., and achieve the effect of overcoming technical defects and simple hardware implementation

Inactive Publication Date: 2017-04-19
HUNAN GOKE MICROELECTRONICS
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Problems solved by technology

However, the CLAHE algorithm is more complicated, and the hardware implementation cost of the CLAHE algorithm is relatively high

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  • Video image self-adaptive contrast enhancement method and device
  • Video image self-adaptive contrast enhancement method and device
  • Video image self-adaptive contrast enhancement method and device

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] see figure 1 , which is a schematic flowchart of an embodiment of a video image adaptive contrast enhancement method provided by the present invention. The video image adaptive contrast enhancement method mainly includes the following steps:

[0035] Step S1, block histogram statistics: perform block histogram statistics on the video image and obtain the histogram statistics information of each image block;

[0036] For the convenience of hardware implementation, in step S1, for video images with different r...

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Abstract

The invention provides a video image self-adaptive contrast enhancement method and device. The video image self-adaptive contrast enhancement method mainly comprises the steps that block histogram statistics is carried out, specifically block histogram statistics is carried out on video images to acquire the histogram statistical information of each image block; histogram redistribution is carried out, specifically histogram redistribution processing is carried out on each image block, so that the gray scale of the middle region of the histogram of the image block is pulled up on both ends, and the data mapping table of each image block is calculated; and interpolation processing is carried out, specifically inter-block smoothing operation is carried out on the data mapping table of each image block through interpolation.

Description

【Technical field】 [0001] The invention relates to video image processing technology, in particular to a video image adaptive contrast enhancement method and device. 【Background technique】 [0002] In image signal processing (Image Signal Processing, ISP), after the original image is processed by multi-stage filtering, the image generally has the problem of reduced contrast, which makes people feel like the image is covered with a layer of yarn, which seriously affects the image quality. Visual effects. In response to the above problems, the contrast enhancement algorithm is generally used to further process the image. The contrast enhancement algorithm mainly adjusts the overall or local characteristics, expands the difference between different object features in the image, suppresses uninteresting features, and improves the image quality. , Enrich the amount of information, and strengthen the image interpretation and recognition effect. [0003] Traditional image contrast...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T2207/10016G06T5/77
Inventor 邢万秦刚刘宇轩姜黎李淼
Owner HUNAN GOKE MICROELECTRONICS