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Method and device for image processing

An image and target image technology, applied in the field of image processing, can solve problems such as changing image color, affecting system effectiveness, changing images, etc.

Active Publication Date: 2021-03-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many applications based on image content analysis, such as face recognition, iris recognition, image retrieval, and video surveillance, external lighting often changes the brightness of the image, and then changes the color of the image, which brings great difficulties to target acquisition. , affecting the effectiveness of systems that rely on color for retrieval or recognition

Method used

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  • Method and device for image processing
  • Method and device for image processing

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Embodiment Construction

[0058] The technical solution in this application will be described below with reference to the accompanying drawings.

[0059] figure 1 is a schematic diagram of an image processing system of an image processing method and device of the present application. Such as figure 1 As shown, the image processing system 100 includes a server 110 , a client 120 , a transmission device 130 , an image processing device 140 and a storage device 150 . The server 110 stores pictures that require image processing, the client 120 is used to send a retrieval request to the image processing device 140, the transmission device 130 is used for the client 120 and the image processing device 140, or the client 120 For information transfer with the server 110, the transmission device may be a switch. The storage device 150 is used for storing the image-processed pictures. The image processing device 140 is mainly used to process the brightness of the image, store the processed image in the stora...

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Abstract

The present application provides a method and device for image processing, which can accurately obtain the brightness of a target object, reduce the color difference of the target object caused by the change of image brightness, and facilitate the retrieval or identification of the target object. The method includes: converting the target image from the red, green and blue RGB space to the hue saturation brightness HSV space, wherein the target image includes a foreground part and a background part; according to the brightness of the background part and the brightness of the foreground part, determine the foreground The color system of the part; according to the color system of the foreground part, the brightness of the foreground part is adjusted; according to the adjusted brightness of the foreground part, the image is converted from the HSV space to the RGB space.

Description

technical field [0001] The present application relates to the field of image processing, and more particularly, to methods and devices for image processing. Background technique [0002] In the prior art, the imaging quality of optical-based imaging devices is affected by light. In many applications based on image content analysis, such as face recognition, iris recognition, image retrieval, and video surveillance, external lighting often changes the brightness of the image, and then changes the color of the image, which brings great difficulties to target acquisition. , affecting the effectiveness of systems that rely on color for retrieval or recognition. [0003] Therefore, how to accurately obtain the brightness of the target object, reduce the color difference of the target object caused by the change of image brightness, and improve the effectiveness of the system for retrieval or recognition depending on the color is an urgent problem to be solved. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/46G06T5/00G06T7/90
CPCG06T2207/10024G06T2207/20012G06V10/56G06T5/94G06V10/40
Inventor 刘永亮武洋阳陈茂林周剑辉
Owner HUAWEI TECH CO LTD