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Method, device and system for correcting face image

A face image and image technology, applied in the field of image processing, can solve the problem of low face recognition rate, achieve the effect of simple correction method, improve face recognition rate, and enhance robustness

Active Publication Date: 2012-07-04
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a face image correction method, which aims to solve the problem of low face recognition rate in the prior art when the collected face image is tilted

Method used

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  • Method, device and system for correcting face image
  • Method, device and system for correcting face image
  • Method, device and system for correcting face image

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Embodiment 1

[0030] figure 1 The flow chart provided by the first embodiment of the face image correction method of the present invention is shown, and the process of the method is described in detail as follows:

[0031] In step S101, a face image is collected.

[0032] In this embodiment, the system collects an image sequence through a built-in or external camera, and detects whether there is a human face in the collected image sequence through a face detection algorithm. When there is a human face in the collected image series, the image The series are cropped at a certain ratio, so that the cropped image includes some basic feature points of the face (such as figure 2 shown), such as eyes, nose, mouth, etc. Wherein, the face detection algorithm includes, but is not limited to, the Adaboost algorithm of similar rectangular features.

[0033] In step S102, the collected face image is preprocessed, and the contour of the preprocessed face image is extracted.

[0034] In this embodime...

Embodiment 2

[0056] Figure 8 The composition structure provided by the first embodiment of the face image correction device of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0057] The face image correction device may be a software unit, a hardware unit or a combination of software and hardware running in each application system.

[0058] The face image correction device includes an image acquisition unit 81 , a contour extraction unit 82 , a position determination unit 83 , a calculation unit 84 and a correction unit 85 . Among them, the specific functions of each unit are as follows:

[0059] An image acquisition unit 81, configured to acquire face images;

[0060] Contour extraction unit 82 is used for preprocessing the face image collected, and extracting the contour of the face image after preprocessing;

[0061] A position determination unit 83, configured to determine the posi...

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Abstract

The invention is applicable to the field of image processing and provides a method, device and system for correcting face images. The method comprises the following steps of: acquiring the face image; preprocessing the acquired face image and extracting a profile of the preprocessed face image; determining the positions of two eyes in the profile of the face image; according to the positions of the two eyes, calculating a center coordinate of the face image and an angle deviating from a vertical position; and reversely rotating the face image deviating from the vertical position at the angle by taking the center coordinate as the center. According to the invention, the acquired oblique face image can be corrected, and the face recognition rate is increased. In addition, the method is simple and efficient and has stronger practicability.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a method, device and system for face image correction. Background technique [0002] In the face recognition technology, it is necessary to collect a face image through a camera, obtain feature points (such as eyes, nose, mouth, etc.) on the face image, and compare them with pre-stored feature points to achieve the purpose of face recognition. However, due to the different habits of each person or the shaking of the lens during the collection process, the collected face images may have a certain offset in the vertical direction, resulting in a low face recognition rate. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a face image correction method, aiming to solve the problem of low face recognition rate in the prior art when the collected face image is tilted. [0004] The embodiment of the present invention ...

Claims

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Application Information

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IPC IPC(8): G06K9/00
Inventor 周龙沙
Owner TCL CORPORATION
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