Definitions for "Bilinear filtering"
technique which allows to solve the problem of the smallest texture in a polygon where they have to be applied. In this case you would have seen a "blocks" effect due to the texture expansion on the surface; thanks to an interpolation operation between a texel and the 4 next to it, the bilinear filtering shows the correct texel.
A technique for reducing the "blockiness" in a texture map by blurring the pixels to make the object appear smoother.
Eliminates pixelization or blockiness when textures are view up close.