A high throughput low cost context-based adaptive arithmetic codec for multiple standards

نویسندگان

  • Keng-Khai Ong
  • Wei-Hsin Chang
  • Yi-Chen Tseng
  • Yew-San Lee
  • Chen-Yi Lee
چکیده

For next generation image compression standard, contextbased arithmetic coding is adopted for improving compression rate. Efficient and high throughput codec design is strongly required for handling high-resolution images. We propose an efficient codec architecture for context-based adaptive arithmetic coding, which exhibits low cost, low latency, and high throughput rate. In addition, it can be programmed for supporting multiple standards such as JPEG, JPEG2000, JBIG, and JBIG2 standards. It is exploiting three-pipeline stages architecture. Based on parallel leading zeros detection and bitstuffing handling, symbol can be encoded and decoded within one cycle. Therefore, throughput rate can be increased as high as codec operating clock rate. For 0.35u 1P4M CMOS technology, both encoding and decoding rate can run up to 185Msymbol/sec. The AC codec only costs 12K gate count and 860um x 860um layout area. These performances can meet high-resolution real time application requirement.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

High speed CABAC codecs for DSP- and FPGA-based platforms

In this paper, two original structures of Context-based Adaptive Binary Arithmetic Codec (CABAC) are proposed for real-time video compression systems. Two proposed CABAC codecs were implemented and optimized for DSP-based platform and FPGA-based platform respectively. Analysis of implementations of proposed CABAC codecs was done. Both the software and hardware version of CABAC codec was tested ...

متن کامل

Optimized architectures of CABAC codec for IA-32- , DSP- and FPGA- based platforms

Two optimized architectures of Context-based Adaptive Binary Arithmetic Coding (CABAC) are presented in the paper. These are: the software version of CABAC (dedicated to IA-32 and DSP platforms) and the hardware version of CABAC (dedicated to FPGA and ASIC platforms). The paper presents analysis of implementations for both versions of CABAC. The optimized software as well as the hardware versio...

متن کامل

Context adaptive binary arithmetic decoding on transport triggered architecture

Video coding standards, such as MPEG-4, H.264, and VC1, define hybrid transform based block motion compensated techniques that employ almost the same coding tools. This observation has been a foundation for defining the MPEG Reconfigurable Multimedia Coding framework that targets to facilitate multi-format codec design. The idea is to send a description of the codec with the bit stream, and to ...

متن کامل

Improved Context-Based Adaptive Binary Arithmetic Coding in MPEG-4 AVC/H.264 Video Codec

An improved Context-based Adaptive Binary Arithmetic Coding (CABAC) is presented for application in compression of high definition video. In comparison to standard CABAC, the improved CABAC codec works with proposed more sophisticated mechanism of data statistics estimation that is based on the Context-Tree Weighting (CTW) method. Compression performance of the improved CABAC was tested and con...

متن کامل

Parallel Tools in HEVC for High-Throughput Processing

HEVC (High Efficiency Video Coding) is the next-generation video coding standard being jointly developed by the ITU-T VCEG and ISO/IEC MPEG JCT-VC team. In addition to the high coding efficiency, which is expected to provide 50% more bit-rate reduction when compared to H.264/AVC, HEVC has built-in parallel processing tools to address bitrate, pixel-rate and motion estimation (ME) throughput req...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002