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Face key point positioning method and device

A technology of face key points and key point positions, which is applied in the field of communication, can solve problems such as inaccurate positioning of face key points and cumulative errors, and achieve the effects of eliminating cumulative errors, improving accuracy, and improving iterative calculation efficiency

Inactive Publication Date: 2017-06-13
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the related technology, each iteration uses different functions to calculate the position of the key points. Since there is no connection between the functions, it causes cumulative errors, which in turn leads to inaccurate positioning of the key points of the face.

Method used

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  • Face key point positioning method and device
  • Face key point positioning method and device
  • Face key point positioning method and device

Examples

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Embodiment Construction

[0040] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0041] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood...

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Abstract

The invention provides a face key point positioning method and device. The method comprises the steps of obtaining initial image feature vectors corresponding to face key point initial positions; inputting the initial image feature vectors into a circular neural network, obtaining updated face key point positions through utilization of the circular neural network, and taking the updated face key point positions as the face key point positions corresponding to the image feature vectors obtained at the next time; and when the face key point positions output by the circular neural network satisfy a convergence condition, obtaining the face key point final positions. According to the method and the device, the face key point positions in the image are iterated and updated through utilization of the circular neural network, the accumulation error of every-time iteration can be eliminated, and the accuracy of positioning the face key point positions is improved.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a method and device for locating key points of a human face. Background technique [0002] Face key points are key parts with strong facial representation capabilities, such as glasses, nose, mouth, and facial contours. Face key point positioning not only plays a great role in face recognition, but also provides a basis for expression recognition, facial recognition or identification, which is one of the core issues in face recognition. In related technologies, different functions are used to calculate key point positions in each iteration. Since there is no connection between functions, cumulative errors are caused, which in turn leads to inaccurate face key point positioning. Contents of the invention [0003] In order to overcome the problems existing in related technologies, the present disclosure provides a method and device for locating key points of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06N3/04
CPCG06N3/04G06V40/171
Inventor 杨松
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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