Video face feature point location method

A feature point positioning and face feature technology, applied in the field of image processing

Inactive Publication Date: 2018-01-09
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for locating video face feature points, thereby solving the problems existing in the existing face feature point locating technology such as requiring uniform illumination and faces with neutral positive expressions. , no occlusion and other technical problems

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  • Video face feature point location method
  • Video face feature point location method

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0056] Since most of the existing facial feature point positioning technologies are aimed at static images, and are limited to faces with neutral expressions, the present invention provides a video face feature point positioning method that realizes closed-eye and facial features in video sequences. Locate the feature points of expressions such as mouth opening (such as yawning).

[0057] Such ...

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Abstract

The invention discloses a video face feature point location method, which is applied to the technical field of image processing. The method mainly comprises the steps that firstly, feature point location is carried out on the first frame of a video to acquire the initial position information of left and right eyeballs, two mouth points and the center of upper and lower lips, which facilitates tracking the points in subsequent video frames; secondly, a large displacement optical flow technology is used for each frame of a follow-up video to establish the variable optical flow field of an imageto track the positions of six points initialized in the first part in the current frame; and thirdly, the tracked position information of six points in the second part is used for feature point location. According to the invention, accurate feature point location can be carried out for rich expressions.

Description

technical field [0001] The invention belongs to the technical field of image processing, and more specifically relates to a method for locating feature points of a video human face. Background technique [0002] The facial feature point location task is to automatically locate the key feature points of the face based on the input face image, such as eyes, nose tip, mouth corner points, eyebrows, and contour points of various parts of the face. Face feature point location technology plays a very important role in many computer vision applications. For example, in face recognition, accurately locating feature points is a necessary condition for comparing two facial images; the location of facial feature points can also be used to track facial expressions to automatically create computer graphics characters in movies or computer games. [0003] According to whether the processed image is a static face image or a dynamic video sequence, the face feature point location task can ...

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Application Information

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IPC IPC(8): G06K9/00G06K9/62
Inventor 韩守东李倩倩刘文龙陈阳胡卓
Owner HUAZHONG UNIV OF SCI & TECH
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