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Method for identifying and positioning human face, apparatus and video processing chip

A technology for identifying and locating organs, which is applied in the field of identifying and locating human facial organs, can solve problems such as inability to accurately identify and locate human facial organs, and achieve the effect of accurately identifying and locating human facial organs

Inactive Publication Date: 2009-08-19
VIMICRO CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method for identifying and locating human face organs, which solves the problem of incapable of accurately identifying and locating human face organs in video images in the prior art

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  • Method for identifying and positioning human face, apparatus and video processing chip
  • Method for identifying and positioning human face, apparatus and video processing chip
  • Method for identifying and positioning human face, apparatus and video processing chip

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Embodiment Construction

[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] One of the core ideas of the present invention is that, on the basis of the preliminary identification of human face organs in the prior art, for the point on the outline where the chin is located, because the edge of the chin is relatively obvious, and the neighborhood of the chin point generally contains some background point, and the characteristics of the chin point of images with different backgrounds are quite different, so the edge information method is used to search; for the junction of the chin and neck, the edge may be blurred due to the heavy shadow, so the grayscale information is used to search; The mouth area is processed using chromaticity space, so that the facial organs can be identified and located more ac...

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Abstract

The invention provides a method for identifying the human face organs in a location image, a device and a video processing chip. The method comprises the following steps of: adopting a principal component analysis algorithm to establish a statistic model in shape of a human face organ and adopting a gray information searching method to carry out a preliminary location for the human face organs in the identified image; on the basis of the statistic model, adopting a human face edge information searching method to determine and adjust the contour point on the chin; changing a red, green and blue mode into a hue saturation mode for the color space of the identified image, and determining and adjusting the contour point in the lips through a chromatic value searching method on the basis of the statistic model; and determining the position of the human face organ and finishing the identification process of human face organs according to the contour points of the human face organs in the identified image. Based on the preliminary identification of human face organs through the prior art, the invention adopts an edge information method for independently processing the contour point of the chin and adopts a color space to process the mouth area, thereby identifying and positioning human face organs more precisely.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method, device and video processing chip for identifying and locating human face organs. Background technique [0002] Face organ positioning has important applications in the fields of face recognition, face animation synthesis, expression recognition, etc. The existing technology uses the active shape model (ASM, Active Shaped Model) A method for performing a location search on an organ, including: [0003] Collect face samples of different shapes, manually identify the contours of the organs from the samples, and use the principal component analysis (PCA, Principal Component Analysis) algorithm to form a statistical model of the shape of the face organs; [0004] According to the contour points identified in the above steps, the gray information of each feature point is counted; [0005] According to the gray level information of the position feature points of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
Inventor 谢东海黄英王浩
Owner VIMICRO CORP
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