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Face image extraction method and device based on face algorithm

An extraction method and technology for the first face, applied in the field of face image extraction by face algorithm, can solve the problems of low efficiency of sequence image processing, large amount of calculation, poor real-time performance, etc., and achieve outstanding substantive features, simple algorithm, and reduced range effect

Pending Publication Date: 2020-05-12
HENAN MINGSHI SAFETY PRECAUTION ENG
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Problems solved by technology

Currently used tracking methods such as active contours or deformed templates, pupil and other feature recognition and tracking methods have a huge amount of calculation, low efficiency in processing sequence images, and poor real-time performance.

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  • Face image extraction method and device based on face algorithm
  • Face image extraction method and device based on face algorithm

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Embodiment Construction

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0014] Such as figure 1 Shown, a kind of face algorithm face image extraction method, comprises obtaining first frame image; Carry out face detection to first frame image, extract the first face area by the detection method based on Haar feature; Obtain the extracted first person The size of the first face window in the face area; the preset window increment, increase the window increment on the basis of the first face window to obtain the size of the search w...

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Abstract

The invention provides a face image extraction method based on a face algorithm. The method comprises the steps of obtaining a first frame image; performing face detection on the first frame image, and extracting a first face region by a Haar feature-based detection method; obtaining the size of a first face window of the extracted first face area; presetting a window increment, adding the windowincrement on the basis of the first face window to obtain the size of a search window, and enabling the search window and the basic face window to be concentric; and performing face detection in the range of the search window in the subsequent frame image, extracting a second face area, and performing feature extraction on the second face area to obtain face information. The face image extractionmethod based on the face algorithm has the advantages of being small in calculated amount and high in tracking real-time performance.

Description

technical field [0001] The invention relates to a face image extraction method and device based on a face algorithm. Background technique [0002] When face detection and feature extraction are performed on sequence images such as videos, face detection in sequence images is the preliminary work of feature extraction. It is usually used as a separate functional module. The purpose is to judge whether the input sequence images contain people. If there is a face area, its position and size are given, and then the special face extraction is performed on the face area to obtain face information. Since the targets in the sequence images are mostly in a moving state, it is necessary to track the face area in the subsequent sequence images, and then locate the face area after tracking, and then perform feature extraction on the face area. In the tracking process, not only the face of the tracking target is moving, but also the background and other targets are constantly changing. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/162
Inventor 桂洪洋陈志忠万军杰赵强高波付保庆郭浩杰李典王志徐超杨军峰聂保春蒋凯桑万里王晓柯
Owner HENAN MINGSHI SAFETY PRECAUTION ENG
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