Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for supplementary light processing of video images

A technology of video image and processing method, which is applied in the field of image processing and can solve the problems of abnormal image picture, decrease of useful area contrast, decrease of image gray level, etc.

Active Publication Date: 2019-09-17
ZHEJIANG DAHUA TECH CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, only the brightness of the center area of ​​the image is enhanced to become prominent, and the processing of the image is not selective. If the useful area in the image is the upper left corner, after the above processing, the brightness of the center area will be enhanced to make it useful. The contrast of the area decreases, and in the process of equalization processing, the gray level of the transformed image will be reduced, and some details will disappear; in addition, in the prior art, the brightness of the central area is directly enhanced, and there is no brightness gradient process, it may make the transformed image appear abnormal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for supplementary light processing of video images
  • Method and device for supplementary light processing of video images
  • Method and device for supplementary light processing of video images

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] figure 1 The embodiment of the present invention provides a schematic diagram of a supplementary light processing process of a video image, and the process includes the following steps:

[0083] S101: Divide the image corresponding to the current frame into multiple rectangular areas according to the set rules, and determine the average brightness value of each coordinate point according to the range of the coordinate points corresponding to the vertices of each rectangular area.

[0084] The video image supplementary light processing method provided by the embodiment of the present invention is applied to electronic equipment. The electronic devices include PCs, smart TVs, cameras, and mobile phones.

[0085] The electronic device divides the image corresponding to the current frame into multiple rectangular areas according to the set rules, uses the vertices of the multiple rectangular areas as corresponding coordinate points, and determines the range within the rang...

Embodiment 2

[0107] On the basis of the above-mentioned embodiments, in order to determine the weight corresponding to each coordinate point and count the statistical results of the first binary image corresponding to each brightness direction, in the embodiment of the present invention, it is possible to determine whether the coordinate point is located at the boundary Corresponding to the first weight or the second weight, so according to whether each coordinate point is located at the boundary of direction judgment, determining the weight corresponding to each coordinate point includes:

[0108] According to each brightness direction, determine the boundary of the direction judgment corresponding to the brightness direction in the first binary image;

[0109] When the coordinate point in the first binary image is located at the boundary of the direction judgment, the coordinate point corresponds to the first weight value; otherwise, the coordinate point corresponds to the second weight v...

Embodiment 3

[0116] On the basis of Embodiment 1, in order to determine the target brightness direction of the image, the target brightness direction of the image can be determined by comparing the statistical result of the first binary image with the first brightness threshold set in the image , therefore, according to the statistical results of the first binary image corresponding to each brightness direction, determining the target brightness direction corresponding to the image includes:

[0117] For the first brightness direction, judging whether the statistical result of the first binary image corresponding to the first brightness direction is greater than a set first brightness threshold;

[0118] If yes, determine whether the statistical result of the first binary image corresponding to the first brightness direction is the maximum value among the first binary image statistical results corresponding to all brightness directions, and if so, determine the first brightness direction as...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and device for supplementary light processing of video images. The method includes: determining the average brightness value of each coordinate point; determining the first binary image of the coordinate point according to the average brightness value; Above, determine the weight corresponding to each coordinate point, and count the statistical results of the first binary image corresponding to each brightness direction; then determine the brightness direction corresponding to the image; determine the enhancement factor of each coordinate point; and then determine each Each pixel in the image is supplemented with light according to the identification information of whether the current scene changes. Because in the embodiment of the present invention, the enhancement factor of each pixel can be determined by determining the brightness mean value of the coordinate points in the image and the brightness direction of the image, and each pixel in the image can be supplemented according to the identification information of whether the current scene changes. Light processing, therefore, can adjust the brightness of the image so that details in dark places in the image appear more clearly.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for supplementary light processing of video images. Background technique [0002] With the continuous development of image processing technology, people have higher requirements for the display of details in the image. In the existing technology, the method of histogram equalization processing on the image is generally used to adjust the display effect of the image. The specific process is as follows: : Calculate the distance between the pixels in the image and the center pixel; calculate the histogram statistical weight of each pixel in the image according to the distance between each pixel in the image and the center pixel; based on each pixel in the image Statistical weight of the histogram of the point, carry out the weighted gray level histogram statistics of each gray level of the image respectively; according to the statistical results ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T7/11G06T7/41
CPCG06T2207/10016G06T2207/20172G06T5/92G06T2207/20012G06T2207/20021G06T5/94G06T5/50H04N5/147H04N23/71H04N23/635
Inventor 钱勇郁军军方伟
Owner ZHEJIANG DAHUA TECH CO LTD