The 3D Graphics Mesh Simplification Method for Digital TV Sign Language Applications

China has the largest number of hearing-impaired people in the worldover millions of Chinese suffered from hearing-impaired. However, most television programs don´t offer Chinese subtitles or the sign language, leaving the hearing disabled people unable to obtain the information and enjoy recreational activities as ordinary people do. Therefore, the sign language on television is very important. Comparing to the ordinary computer, the calculation and processing power of the digital TV terminals is nowhere near a computer. Small storage space and low performance restrict the ability of displaying 3D graphics on the television. Therefore, this article uses a 3D graphics mesh simplification method which based on edge collapse, to simplified 3D graphics, and apply it to the sign language on the digital television, to achieve the goal of displaying the 3D sign language graphics smoothly and intuitively on the digital TV terminals.