Construction And Reuse Of Deformation Field For Garment Image

With the development of e-commerce,the demand for virtual fitting in e-commerce is becoming more and more urgent.At present,the virtual fitting is mainly based on two-dimensional fabric patterns stitching.Then,the garment simulation and virtual fitting are completed through physically-based simulation modeling.However,these solutions have a large workload and limited application scenarios.For ordinary clothing sellers,information such as two-dimensional patterns is lacking.How to calculate the dressing effects on different body shapes becomes a problem.Also,related research is scarce.Therefore,it is of great significance to the development of related industries to obtain the dressing effects more quickly and conveniently through simulating calculation.This paper starts with the construction and reuse of the deformation field,and obtains the dressing effects of any garments on the human body.By means of mathematical method,the deformation correspondence between the tile state and the dressing state of the template garment is established,and the deformation field is established.Then,the deformation field is transferred to the tiled image of the target garment with similar style to realize the calculation and simulation of the dressing effect of the target garment.Because of the softness of the fabric,there is a large nonlinear deformation between different states of garments.The existing feature point matching algorithm is difficult to adapt to the automatic robust mapping before and after the large deformation of the image,thus affecting the construction of the deformation field.This paper completes the construction and reuse of the garment image deformation field from the following three aspects:First,a coded point matching algorithm is developed to satisfy the large deformation of the garment.By designing special coded points and completing the extraction,recognition and matching of the points,the matching point pairs with even and fine distribution between the tiled garment image and the dressing image is obtained.Second,an algorithm for constructing garment image deformation field before and after garment deformation is researched.Based on the marker pairs and the corresponding contours of the garment before and after deformation,the meshes of tiled garment and dressed garment with the same structure are constructed.After the deformation of each patch is described,the deformation field of this garment is completed.Third,a method for reusing the garment image deformation field is researched.By establishing the mesh correspondence between the source garment and the target garment in the tiled state,and then using the source garment deformation field,this paper can construct the energy minimization equation with the target mesh model deformation constraint.After calculating the deformation of the target garment image to realize the deformation field reuse,we can get the dressing effect of the target garment.Based on the research results of this paper,we developed the deformation field construction and reuse system for clothing.The system can be used to complete the coded points matching between the source tiled garment image and the source dressing image,create corresponding mesh models and establish a deformation field.Also,in this system,for the image of target garments with similar pattern,the models can be established and the human body dressing effects can be obtained by the reuse of deformation field.After this,the virtual fitting function is realized.