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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

Inactive Publication Date: 2006-12-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have some improvements in some aspects compared with the methods of the classic operator class, the biggest problem is that the results of the method are still used in subsequent applications, especially in subsequent applications that are closely related to human perception. poor visual effect

Method used

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  • Digital image edge information extracting method
  • Digital image edge information extracting method
  • Digital image edge information extracting method

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Embodiment Construction

[0114] Since the results of digital image edge extraction have a very close relationship with human visual perception characteristics in subsequent applications, if the human perception characteristics are fully considered in the digital image edge extraction method, the edge extraction results can be used in subsequent applications. In applications, especially in follow-up applications closely related to human visual perception, the visual effects of video digital images are greatly improved.

[0115] Therefore, the core of the present invention is to determine the gradient image of the digital image, perform masking processing on the gradient image of the digital image according to visual perception characteristics, and extract edge information of the digital image according to the masked gradient image.

[0116] The technical solution provided by the present invention will be further described below based on the core idea of ​​the present invention.

[0117] Human visual re...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00H04N7/26
Inventor 罗忠杨付正万帅常义林
Owner HUAWEI TECH CO LTD
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