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Image enhancement method and device

An image enhancement and processing method technology, applied in the field of image processing, can solve problems such as poor image versatility, and achieve the effect of improving the versatility

Active Publication Date: 2015-05-20
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide an image enhancement processing method and device to solve the problem of poor versatility in image enhancement existing in the prior art

Method used

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  • Image enhancement method and device

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Embodiment 1

[0076] figure 2 The flow chart of the image enhancement processing method provided by Embodiment 1 of the present invention specifically includes the following processing steps:

[0077] Step 201: Determine the brightness values ​​of pixels corresponding to the image to be processed corresponding to two preset percentages in ascending order of the brightness values ​​of the pixels included in the image to be processed as two quantile brightness values.

[0078] Step 202: Divide the pixels included in the image to be processed into three sets of pixel points according to the order of brightness values ​​from small to large by using the two quantile brightness values ​​as the boundary points.

[0079] In this step, the three pixel point sets are respectively the first pixel point set, the second pixel point set, and the third pixel point set, and the brightness value of the pixel points included in the first pixel point is smaller than that included in the second pixel point se...

Embodiment 3

[0112] Based on the same inventive concept, according to the image enhancement processing method provided by the above-mentioned embodiments of the present invention, correspondingly, Embodiment 3 of the present invention also provides an image enhancement processing device, the structural diagram of which is as follows image 3 shown, including:

[0113] The quantile luminance value determination unit 301 is configured to determine, among the pixels included in the image to be processed, the values ​​of the pixels corresponding to the preset percentages of the number of pixels included in the image to be processed according to the order of luminance values ​​from small to large. Brightness value, as the brightness value of each quantile;

[0114] The division unit 302 is configured to divide the pixels included in the image to be processed into a plurality of pixel sets according to the order of the brightness values ​​from small to large according to the dividing points of t...

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Abstract

The invention discloses an image enhancement method and device. The method includes: for pixel points of an image to be processed, according to a sequence of low brightness to high brightness, determining pixel point brightness values corresponding to percentages of the quantity of the pixel points in the image to be processed, as quartile brightness values, with the quartile brightness values as demarcation points, according to the sequence of low brightness to high brightness, dividing the pixel points of the image to be processed, into a plurality of pixel point sets, for each pixel point set, subjecting the brightness values of the pixel points in the pixel point set to enhancement in a preset processing manner corresponding to the pixel point set, thereby acquiring enhanced brightness values of the pixel points in the pixel point set, and replacing the brightness values of the pixel points in the pixel point sets with the corresponding enhanced brightness values, thereby acquiring a first enhanced image of the image to be processed. The image enhancement method and device has the advantage that image enhancement universality is improved.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to an image enhancement processing method and device. Background technique [0002] Based on the wide application of computer vision technology, in the process of video surveillance of the required scene, because the camera equipment may be affected by external environmental factors, such as when encountering changes in the environment such as fog, rain, haze, and night, The collected video images are not clear and have little detail information, which affects the image quality and visual effect of the video images, which is not conducive to the subsequent analysis and processing of the collected video images. Therefore, it is necessary to image the collected video images Enhancement processing, so that it can highlight the area of ​​interest in the image, weaken or remove unnecessary information, strengthen useful information, and make the detailed information of the image r...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 刘敏叶昕郭一民潘石柱张兴明
Owner ZHEJIANG DAHUA TECH CO LTD
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