Κανονική συνθήκη ορισμού, λίστα ορισμών, διεύθυνση, σχεδίαση και υλοποίηση αρχιτεκτονικής υψηλής απόδοσης για τους αλγόριθμους μετασχηματισμού και κβαντοποίησης του Η.264

Abstract

Efficient digital video coding techniques are increasingly gaining importance due to the widespread of low bit rate video streaming applications (like videotelephony and videoconferencing). This raises the need for an industry standard for compressed video representation with substantially increased coding efficiency and enhanced robustness to network environments. In 2001, the Joint Video Team (JVT) was formed to represent the cooperation between the ITU-T Video Coding Expert Group (VCEG) and the ISO/IEC Moving Picture Expert Group (MPEG) aiming for the development of a new Standard. The JVT aim was to finalize the H.26L proposal and convert it into an international standard (H.264/MPEG-4 Part 10) published by both ISO/IEC and ITU-T. H.264 provides similar functionality to earlier standards such as H.263+and MPEG-4 Visual (Simple Profile) but with significantly better compression performance and improved support for reliable transmission. It does not use the traditional 8^8 DCT transform as the basic transform, instead it suggests 4x4 DCT-based transform that can be implemented only using integer addition and shift units and avoids use of multiplication. In this project, a hardware prototype is designed for the H.264 supported quantization and variant types of supported transforms (core transform, 2x2 and 4x4 hadmard transforms). Also the inverse transform and quantization path is considered. The architecture is prototyped and simulated using ModelSim 6.1®. It is synthesized using Synopsys Design Compiler®.