Realtime Face Animation using High-Speed Texture Mapping Algorithm

고속 텍스처 매핑 알고리즘을 이용한 실시간 얼굴 애니메이션

This paper proposes a high-speed texture mapping algorithm and apply it for the realtime face animation. The mapping process devide into pixel correspondences, Z-buffering, and pixel value interpolation. Pixel correspondences and Z-buffering are calculated exactly through the algorithm. However, pixel values interpolation is approximated without additional calculations. The algorithm dramatically reduces the operations needed for texture mapping. Only three additions are needed in calculation of a pixel value. We simulate the 256$\times$240 pixel facial image with about 100 pixel face width. Simulation results shows that frame generation speed are about 60, 44, 21 frames/second in pentium PC 550MHz, 400MHz, 200MHz, respectively,