Revision as of 10:17, 8 July 2007 edit 59.92.166.119 (talk) No edit summary ← Previous edit		Revision as of 15:25, 12 August 2007 edit undo Dark Shikari (talk \| contribs) 5,751 edits →Quantization matrices: algorithms -> encoders Next edit →
Line 14: === Quantization matrices === A quantization matrix is used in combination with a DCT coefficient matrix to carry out the previously mentioned transform. Quantization matrices are often specifically designed to keep certain frequencies in the source to avoid losing image quality. Many video ~~compression algorithms~~encoders, such as [[Xvid]] and [[H.264/AVC]] allow custom matrices to be used. This is an example DCT coefficient matrix: <!--NOTE: this matrix was generated using random numbers and the other two matricies. It may not actually work well with an iDCT. -->

Quantization (image processing): Difference between revisions