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Design and Implementation of Embedded JPEG 2000 Codec System

Author: ZhangEn
Tutor: MenAiDong
School: Beijing University of Posts and Telecommunications
Course: Communication and Information System
Keywords: JPEG 2000 Standard ADV202 chip MicroBlaze embedded microprocessor Network transmission
CLC: TN919.81
Type: Master's thesis
Year: 2008
Downloads: 179
Quote: 2
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Abstract

Due to the huge amount of digital image / video data compression and coding in order to facilitate storage and transmission is a common practice. Traditional measure of an image / video coding algorithm has two main indicators: the quality of the compression efficiency and reconstruction. How to get the best quality is the focus of all the coding standard to the minimum data rate. In recent years, with the rapid development of the continued expansion of the Internet and mobile communications, the emergence of a large number of multimedia services, including video conferencing, video telephony, video surveillance, Internet TV, mobile TV, telemedicine, digital libraries, etc. and so on. These emerging business in the compression efficiency and the quality of reconstructed on the basis of hope that the image / video coding techniques provide some new features: ● coding delay as small as possible; ● accurate stream rate control; ● strong anti-misuse code capacity; ● in the same stream lossless and lossy compression; ● Scalability - needed to dynamically adjust the bit rate, quality, resolution; ● security and copyright protection. JPEG 2000 is a new generation of image / video coding standard, which uses the wavelet transform instead of the traditional block-based DCT transform not only a fundamental solution to the previous standard can not be avoided blockiness, and to achieve a good listed above properties. This is due to the wavelet transform multi-resolution analysis capability consistent with the human visual system, modern applications need many of the features, such as multi-resolution encoding, multi-layered quality control, embedded code stream, can wavelet image coding structure is very natural together. In the theoretical analysis, JPEG 2000 compared to some other image / video coding standard has many unique advantages, but in practical application, it does not as quickly as one would expect promotion. The reason is, on the one hand, it launched late, the market has largely been occupied by other standards. On the other hand, the majority of manufacturers before did not give it enough support, lack of mature, low-cost products and solutions. Take chips, the only well-known chip maker Analog Device relatively complete product line. This article is committed to design a complete hardware implementation of JPEG 2000 codec system, trying to be able to fully reflect the JPEG 2000 standard advantages, and have a small size, low power consumption, low cost, interface wholly control and simple, preliminary adaptation component the actual needs of the application. The work done by including the following: (1) in the JPEG 2000 coding standard ideas and algorithms, including wavelet transform, multiresolution analysis, EBCOT analysis of JPEG 2000 to get these benefits from the principle underlying reasons . (2) to determine the general scheme of the system design. Discussion based on needs analysis, system block diagram is given, and select the appropriate chips and components to ensure that they can meet the requirements of the indicators of the system. (3) dividing module, detailed design and implementation of the various parts of the system is the use of EDA tools to draw the circuit schematic and PCB plans. After the completion of the circuit board processing welding and debug module. (4) writing system software, including module-specific drivers, firmware and the overall control program. (5) summarizes all the work, then put forward the direction of future research and improvement ideas. The above work is also the main areas covered in this article.

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