Interactive 3D Head Reconstruction By Combing Key Points And Voxels

Three dimensional reconstruction has been a hot topic in the area of computer version.Moreover,the three dimensional head reconstruction has extensive application in face recognition,medicine,movie production,security,etc.There exist mature three dimensional reconstruction methods and technology based on key points if enough key points can be obtained.In the three dimensional reconstruction of the head,a large number of key points can be extracted from the face,but not enough key points from the hair.The three dimensional reconstruction method based on key points does well in the facial reconstruction,but not be able to reconstruct the hair part.Because the traditional three dimensional reconstruction method based on voxel exploits silhouette information,the voxel just need to be judged if the voxel can be projected into the silhouette,but don’t need to extract key points.The hair part approximates to a convex surface and the silhouette information from different viewpoints can reflect the three dimensional shape of the hair part,so the head three dimensional model can be reconstructed using silhouette information.After further study of two methods of three dimensional reconstruction,this thesis proposes an interactive head three dimensional reconstruction method by combining of key points and voxels.The main process is as follows: first of all,extract key points and silhouette;secondly,reconstruct the head by key points method and get the space needed to be reconstructed by voxel method interactive;finally,reconstruct the space which we get in last step;A better head model is reconstructed by this proposed three dimensional reconstruction method.