IMPLEMENTATION OF FORWARD 8x8 INTEGER DCT FOR H.264/AVC FRExt

Abstract

The H.264/AVC image encoding standard has been used in many systems, especially in HD(High Definition) devices because of the introduction of the FRExt standard, which  leads to additional characteristics in this standard like the Higher Resolution and Higher Bit rates. With the introduction of the FRExt, a good number of amendments are added to the AVC standard, most importantly at the level of the transform block. In addition to the 4x4 Integer DCT, there is  an  8x8 Integer DCT  (Discrete Cosine Transform) matrix. This work focuses on the Forward 8x8 Integer Transform block implementation of the H.264 FRExt standard, exploring different methods of implementations, and examining how these methods affect the hardware and the maximum frequency. There is the 2D implementation (Matrix multiplication) using multipliers and adders and the 1D implementation(butterfly algorithm) using adders. These implementations are done using VHDL and MATLAB. The simulations are done in Vivado Design Suite.

Keywords

• H.264 FRExt,integer DCT,image compression,VHDL

References

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