Digital image edge information extracting method

A digital image and edge information technology, applied in the video field, can solve problems such as poor visual effects
CN1881255AInactive Publication Date: 2006-12-20HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2006-12-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for extracting the edge information of digit image, which is characterized in that: fixing the gradient image of digit image; shielding the gradient image based on the human visual sensitive character; based on the shield gradient image, extracting the edge information of digit image. The invention can consist the edge extracted result and the analyzed edge condition, to make the edge extracted effect meet the human visual sensitive character, to realize better following application and improve the digit image quality in video communication.
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Description

technical field

[0001] The invention relates to the field of video technology, in particular to a digital image edge information extraction method. Background technique

[0002] The latest research on visual psychology shows that human beings' observation and understanding of images mainly focus on a small part of the key information of the entire image information. By grasping these key information, one can understand the image well.

[0003] Since the edge is one of the most basic features of the image, the edge contains image information for recognition, and is an important characteristic parameter for people to describe, identify targets and interpret images. Edges widely exist between objects and backgrounds in images, between objects and Among objects, HVS (Human Visual System) is most sensitive to the edge information in the video image, so the edge information of the image is a very important information among the above key information.

[0004] At present, multimed...

Claims

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