Senay Amanuel Negusse MEE 08:19, pp. 59. TEK/avd. för signalbehandling, 2008.
H.264 is the latest most efficient video coding standard developed by joint collaboration
between ITU-T’s Study Group 16 Question 6 (Video Coding Experts Group VCEG) and
ISO’s MPEG forming a group known as the Joint Video Team (JVT). The JVT has added
additional features to the previous video coding standards (MPEG-4 and H.263) which has
allowed the current H.264 to provide a much more efficient compression ability giving a bit
rate reduction of about 50 % of the previous standards for the same video quality.
This thesis is among the ongoing studies that deal with trying to improve the intra prediction
scheme of H.264. It aims to modify the directional extrapolation scheme of the standard
intra prediction and add a combined usage based on the local structure of previously
reconstructed pixels surrounding the area to be coded. A new method of searching the
direction of the local structure of an area using optimal filters is deployed. The method is
based on the least squares algorithm. A modified coder structure is implemented in an
attempt to obtain improved coding efficiency using the new prediction. The result based on
visual inspection and objective evaluation of the new modified prediction against standard
H.264 intra prediction is presented.