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Pipelined Architecture of 2D-DCT, Quantization and ZigZag Process for JPEG Image Compression Using VHDL

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Author :  T. Pradeepthi and Addanki Purna Ramesh

Affiliation :  Sri Vasavi Engg College

Country :  India

Category :  Digital Signal & Image Processing

Volume, Issue, Month, Year :  2, 3, September, 2011

Abstract :


This paper presents the architecture and VHDL design of a Two Dimensional Discrete Cosine Transform (2D-DCT) with Quantization and zigzag arrangement. This architecture is used as the core and path in JPEG image compression hardware. The 2D- DCT calculation is made using the 2D- DCT Separability property, such that the whole architecture is divided into two 1D-DCT calculations by using a transpose buffer. Architecture for Quantization and zigzag process is also described in this paper. The quantization process is done using division operation. This design aimed to be implemented in Spartan-3E XC3S500 FPGA. The 2D- DCT architecture uses 1891 Slices, 51I/O pins, and 8 multipliers of one Xilinx Spartan-3E XC3S500E FPGA reaches an operating frequency of 101.35 MHz One input block with 8 x 8 elements of 8 bits each is processed in 6604 ns and pipeline latency is 140 clock cycles.

Keyword :  JPEG, discrete cosine transform (DCT), quantization, zigzag, FPGA

Journal/ Proceedings Name :  International Journal of VLSI design & Communication Systems (VLSICS)

URL :  https://aircconline.com/vlsics/V2N3/2311vlsics08.pdf

User Name : Ryan cooper
Posted 02-06-2022 on 19:37:22 AEDT



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