A face mapping method and system based on affine transformation

Abstract

The invention discloses a face mapping method and system based on affine transformation, which performs standard feature point positioning and standard feature point extraction on a standard face map, and uses the Lagrange interpolation method to extract the standard face Curve fitting is performed on the standard feature points of the figure to obtain standard texture coordinates, and then the actual feature points of the face image to be processed are located, and according to the actual feature points of the face image to be processed, the standard feature points are transformed by affine transformation. The texture coordinates and the corresponding actual feature points of the face map to be processed are adaptively matched to obtain the transformed texture coordinates, and finally the texture coordinates are used to draw the map material on the corresponding actual features of the face map to be processed point position to get the effect face map; thus, it can adapt to various shapes of face parts, making the processed effect face map more natural, and solving the robustness problem of automatic decoration.

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...

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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 transformation, which solves the problem of robustness of automatic decoration, and realizes adapting to various shapes of human faces.

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