Texture Mapping Based On Mip-Map

The most remarkable research direction is the actual sense which is the degree that the created graphics reflect the objective world in computer graphics .Texture mapping is one of the most successful new techniques in high quality image synthesis so that we can use the digit images in the three-dimensional scene to improve the living effect. It is applied widely very much.Because of the anisotropism of texture mapping, a method is presented with footprint area sampled texturing based on Mip-Map in order to reduce computation . The sampling rate is adapted in each chosen Mip-Map level separately to avoid undersampling in level l and oversampling in level l+1 .The Mip-Map texture mapping is presented firstly. For effective antialiasing each pixel is offen considered as a square on screen space. The projection of the pixel on the texture space is usually approximated with a square. The Mip-Map level l is calculated from the side of the square. The samples in level l and level l+1 are average by a rule to get the final pixel color. But as it is known to all, texture mapping is anisotropic. Only simply using a square to approximate the irregular quadrangle does not accord with the request of antialiasing. So a method is presented to improve theMip-Map texture mapping, that is footprint area sampled texturing. Besides, the relation of pixels is used. Besides, an algorithm for the footprint area sampled texturing based on Mip-Map has been extended to sphere surfaces. It uses the principles of quadric surfaces subdivision to subdivide the sphere and applies the footprint area sampling method to get the little block color on the sphere which is subdivided. This method can effectively obtain high quality texture mapping images and resolve the problems of aliasing.