a weight c 2 Continuous linear blend shape editing method

Abstract

The invention discloses a weight C<2> continuity-based linear mixed shape editing method. The method includes the following steps that: 1) basic information is obtained, wherein the basic information contains a model, real control points and control bones which are inputted by a user; 2) the real control points are adopted to discretely control the control bones, and the real control points are initialized; 3) internal distances from each vertex of the model to the real control points are estimated; 4) virtual control points are generated; 5) the weights of the real control points for the virtual control points and the weights of the control points for the vertexes of the model are calculated; 6) the user operates the transformation of the real control points, and the virtual control points respond to the transformation; and 7) a GPU performs parallel accelerated calculation to reconstruct the model. According to the method of the invention, the original details of the surface of the model are retained as much as possible in an editing process; the transition of the deformation of the model is smooth, the partial or overall shape of the model can be sensed, and the editing effect of the model is good; and the parallel calculation acceleration of the GPU is adopted in the reconstruction stage of the model, and therefore, editing feedbacks can be timely given to the user, and efficient editing efficiency can achieve a real-time effect.

Description

technical field [0001] The present invention relates to the technical field of model shape editing, in particular to a weight C 2 Continuous linear blend shape editing method. Background technique [0002] Model shape editing is closely related to computer animation. The model edited by editing algorithm or software can be used as the key frame of the animation, and an animation sequence can be generated by interpolation algorithm. Computer animation can also use computer graphics and image processing algorithms to generate a series of scene models or scenes through programming or animation software. Generally, the current frame is a local modification of the previous frame. Computer animation is to achieve the effect of visual object movement by playing still pictures in rapid succession. Generally speaking, a refresh rate of more than 25 frames per second can make the human eye feel that what it sees is a continuous visual effect. [0003] Two-dimensional animation is...

AI Technical Summary

Problems solved by technology

The editing of this type of algorithm is not intuitive enough, and the user needs certain skills and experience to operate the corresponding control unit

Moreover, some of the bounding boxes and control grids of this type of algorithm are semi-automatically generated, and some algorithms require other software to generate bounding boxes and control grids, and even require users to participate in the generation work, and cannot adapt to all 3D models

The above-mentioned third type of algorithm will have a "sugar paper effect". For some models with small features, the editing effect of fine deformation cannot be achieved, so additional constraints need to be added to this type of model

Therefore, none of the existing algorithms can meet the above-mentioned editing requirements at the same time, and there is a lack of an editing algorithm that is easy to understand, efficient, easy to operate and edit, and has good effects.

The editing effect of an editing algorithm on the model is mainly reflected in the deformation quality of the model, the efficiency of editing and the simple operation, but most of the existing algorithms can rarely achieve the desired effect in the above three aspects.

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