Question

Explain about different image compression techniques.

Answer 1

Methods for lossless image compression are:

• Run-length encoding – used in default method in PCX and as one of possible in BMP, TGA, TIFF

• Area image compression

• DPCM and Predictive Coding

• Entropy encoding

• Adaptive dictionary algorithms such as LZW – used in GIF and TIFF

• DEFLATE – used in PNG, MNG, and TIFF

• Chain codes