Graphics Processing

Texture Mapping

Graphics is implemented using various complex algorithms. Most computer graphics are created by texture mapping. Textures maps are stored as files in the system. The textures are further changed by various techniques, according to new objects introduced in the environment. These changes are formed performed by: 

1. Projective Texture Mapping
2. Image Warping
3. Transparency Mapping
4. Surface Trimming 

Filtering

After the texture map has been stored, it must be displayed on screen. Texture maps are 3 dimensional spaces, which consist of polygons. Polygons can be divided into texels (3dimensional pixels). Now, when we have a texture map consisting of these texels, the question arises, which texel should be used to determine the 2 dimensional pixels. The main technique used is by imagining a ray of light, which moves through a filter and highlights a group of texels. This is decided by various techniques.

1. Point Sampling
2. Bilinear filtering
3. Trilinear Filtering
4. Anisotropic Filtering

Next >>