Method and system for pasting image to human face based on affine transformation

An affine transformation and face map technology, applied in the field of image processing, can solve problems such as automatic decoration robustness, and achieve the effect of solving the robustness problem

Active Publication Date: 2015-07-15
XIAMEN MEITUZHIJIA TECH
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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a face mapping method and system based on affine tr...

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  • Method and system for pasting image to human face based on affine transformation
  • Method and system for pasting image to human face based on affine transformation
  • Method and system for pasting image to human face based on affine transformation

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[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and 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.

[0040] Such as figure 1 Shown, a kind of face mapping method based on affine transformation of the present invention, it comprises the following steps:

[0041] 10. Obtain a standard face image, and perform feature point positioning and feature point extraction on the standard face image;

[0042] 20. Use the Lagrange interpolation method to perform curve fitting on the feature points of the extracted standard face image to obtain the standard texture coordinates;

[0043] 30. Obtain the face image to be processed, and perform feature point positionin...

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Abstract

The invention discloses a method and system for pasting an image to a human face based on affine transformation. Characteristic point locating and characteristic point extraction are carried out on a standard human face image, curve fitting is carried out on extracted characteristic points of the standard human face image through a Lagrange's interpolation method, standard grain coordinates are obtained, then characteristic point locating is carried out on the human face image to be processed, self-adaption matching is carried out on the standard grain coordinates and the corresponding characteristic points of the human face image to be processed through affine transformation according to the actual characteristic points of the human face image to be processed, and transformation grain coordinates are obtained; finally, image pasting materials are drawn on the corresponding characteristic points of the human face image to be processed through the transformation grain coordinates, and an effect human face image is obtained. Therefore, the method and system can adapt to human face portions in various shapes by itself, the processed effect human face image is more natural, and the problem of robustness of automatic decoration is solved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a face mapping method based on affine transformation and a system applying the method. Background technique [0002] Recently, the maturity of face recognition technology has led to the rapid development of some cosmetic apps. APP can use face recognition and face detection technology to do special face processing for pictures, such as automatic makeup and automatic decoration. Since most of these apps use built-in materials designed by designers, and superimpose the makeup on the corresponding position of the face through certain transformations, so as to achieve the effect of makeup and decoration, therefore, it is natural for this type of app to accurately match various parts of the face. technical difficulties. [0003] To achieve accurate matching of material and facial parts, in addition to accurate recognition of facial key points, an adaptive material texture d...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06K9/00
Inventor 张伟叶志鸿张长定傅松林
Owner XIAMEN MEITUZHIJIA TECH
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