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Video signal processing method for improving image sharpness

A technology for video signal processing and image enhancement, which is applied in image communication, television, color television, etc., and can solve problems such as unproposed solutions

Inactive Publication Date: 2015-04-29
CHENGDU GOLDENWAY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, for the above-mentioned problems existing in related technologies, effective solutions have not yet been proposed

Method used

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  • Video signal processing method for improving image sharpness
  • Video signal processing method for improving image sharpness
  • Video signal processing method for improving image sharpness

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Embodiment Construction

[0038] The following and accompanying appendices illustrating the principles of the invention Figure 1 A detailed description of one or more embodiments of the invention is provided together. The invention is described in connection with such embodiments, but the invention is not limited to any embodiment. The scope of the invention is limited only by the claims and the invention encompasses numerous alternatives, modifications and equivalents. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. These details are provided for the purpose of example and the invention may be practiced according to the claims without some or all of these specific details.

[0039] In order to simultaneously consider the change amplitude and change frequency of the image gray scale, the present invention combines the local complexity and the local standard deviation of the image, and uses a new incremental ...

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Abstract

The invention provides a video signal processing method for improving image sharpness. The video signal processing method includes receiving an original image frame in a video signal to be processed, calculating complexity Lc and standard deviation Lv of a specific pixel neighborhood Omega, and describing gray level change frequency and amplitude of the neighborhood; according to the complexity Lc and the standard deviation Lv, establishing an increment function Lambada to dynamically adjust the image sharpness. The video signal processing method has the advantages that the image local change amplitude and frequency is considered, while details are added, artifacts never occur, noise amplification is depressed partly, and accordingly margins of the image are sharper, and texture of the image is clearer.

Description

technical field [0001] The invention relates to video image signal processing, in particular to a video signal processing method for enhancing image sharpness. Background technique [0002] With the continuous development of computer technology, multimedia technology and network technology, video remote acquisition system has entered the stage of full digitalization, and is more and more widely used in many industries such as security protection, safety monitoring and high-definition video image acquisition. In the signal processing of video images, the gray values ​​of pixels in the neighborhood of digital images are highly correlated, and these correlation information are generally reflected in complex edge and texture detail information. The change of image sharpness is Image enhancement is based on analyzing these edge details. The existing sharpness enhancement methods are not effective in the processing of continuous frame video images, and the response in the gray-sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/202H04N5/21
Inventor 卢宇刘宇波
Owner CHENGDU GOLDENWAY TECH
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