A High-Accuracy and High-Speed 2-D 8x8 Discrete Cosine Transform Design

In this paper, a high-accuracy and high-speed 2D 8x8 Discrete Cosine Transform (DCT) design is proposed. By using the parallel architecture, inherited from the design reported by S. Ramachandran et. al., re-designing and enhancing function of all component modules, the proposed design can transform each 8x8 block in 64 cycles and achieve a very high accuracy compared to other designs and standard references. The proposed design implemented on Xilinx Virtex 4 can run at the speed of 308 MHz, processing images of size 1920 x 1080 pixels at the rate of 145 frames per second. KeywordsDCT, Discrete Cosine Transform, Pipeline, Parallel Matrix Multiplication, Parallel Architecture, FPGA, Accuracy, FPGA.