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Method and device for confirming characteristic point position in image

A feature point and image technology, applied in the field of image processing, can solve the problem of low positioning accuracy of image feature points and achieve the effect of improving accuracy

Inactive Publication Date: 2008-09-24
VIMICRO CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for determining the position of feature points in an image to solve the problem of low positioning accuracy of image feature points in the prior art

Method used

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  • Method and device for confirming characteristic point position in image
  • Method and device for confirming characteristic point position in image
  • Method and device for confirming characteristic point position in image

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Embodiment Construction

[0021] Embodiments of the present invention provide a method and device for determining the position of a feature point in an image, so as to realize accurate real-time positioning and tracking of the feature point in a collected image.

[0022] The embodiment of the present invention takes determining the position of the facial feature points in the image as an example, and introduces how to quickly obtain the feature points of the face in each posture in the image, such as the corners of the mouth, the corners of the eyes, etc., and perform continuous processing on these feature points , fast track. Of course, according to the technical solutions provided by the embodiments of the present invention, it is also possible to locate and track feature points of other objects such as cars and animals in the image.

[0023] In the embodiment of the present invention, the Gabor feature is applied to the extraction of face features, the Gabor feature is combined with ASM, the Gabor f...

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Abstract

The invention discloses a method and a device for determining the position of a characteristic point in an image, which is used for solving the problem existing in the prior art that the positioning precision of the characteristic point is not high. The method for determining the position of the characteristic point in the image which is provided by the invention includes that: an active shape model ASM which consists of a shape model and a Gabor character model in a target area in the image is obtained in advance based on image sample trainings; an input image is detected, the initial position of the characteristic point in the target area of the input image is obtained, and the Gabor characteristic of the characteristic point in the target area in the input image is worked out according to the initial position; combined with the shape model in the target area, and a match is carried out between the Gabor characteristic of the characteristic point in the target area in the input image and the Gabor characteristic of the characteristic point in the Gabor characteristic model to determine the position of the characteristic point in the target area.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for determining the position of feature points in an image. Background technique [0002] Face image is one of the most convenient ways of human-computer interaction in computer vision system. Face localization is to determine the position of all faces in an image or image sequence, while face tracking is to continuously track the position of one or more faces in a video sequence. Face positioning and tracking technology is not only a necessary prerequisite for face recognition, expression recognition, face synthesis and other technologies, but also has a wide range of application values ​​in intelligent human-computer interaction, video conferencing, intelligent monitoring, video retrieval and other fields. [0003] Active Shape Models (ASM, ActiveShape Models), which are widely used in the field of face positioning in the prior art, is a pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G06K9/64
Inventor 黄英谢东海王浩
Owner VIMICRO CORP
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