Texture mapping is used to add realism to computer generated scenes. This is done by putting a raster image onto a 3D object. Depending on the image, it will render the object to have "texture", like brick using a picture of bricks.
LAVA provides two methods of texture mapping. Pixel accurate and vertex level texture mapping. Both can use pictures, video camera or digital movies as sources for the 2-D rasters which are used to texture the 3D object.