Real-time DSP implementation of motion-JPEG2000 using overlapped block transferring and parallel-pass methods

Authors:
Byeong-Doo Choi;Kang-Sun Choi;Min-Cheol Hwang;Jun-ki Cho;Sung-Jea Ko
Affiliations:
Department of Electronics and Computer Engineering, Korea University, Sungbuk-Ku, Seoul 136-701, South Korea;Department of Electronics and Computer Engineering, Korea University, Sungbuk-Ku, Seoul 136-701, South Korea;Department of Electronics and Computer Engineering, Korea University, Sungbuk-Ku, Seoul 136-701, South Korea;Department of Electronics and Computer Engineering, Korea University, Sungbuk-Ku, Seoul 136-701, South Korea;Department of Electronics and Computer Engineering, Korea University, Sungbuk-Ku, Seoul 136-701, South Korea
Venue:
Real-Time Imaging
Year:
2004

Citing 3
Cited 3

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ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Real-time multi-level wavelet lifting scheme on a fixed-point DSP for JPEG 2000 and scalable video coding

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Abstract

This paper presents a real-time implementation of Motion-JPEG2000 encoder using a fixed-point DSP chip. Among several modules in JPEG2000 encoder, the lifting algorithm for discrete wavelet transform (DWT) and the embedded block coding with optimized truncation (EBCOT) comprise more than 85% of the encoding complexity. Thus, it is very important to design and optimize these two modules in order to increase the performance of the hardware implementation. First we propose an overlapped block transferring (OBT) method that can significantly improve the performance of the lifting algorithm for DWT by increasing the cache hit rate. We show that the execution time of the lifting scheme can be further reduced by programming the DSP software using the single instruction multiple data (SIMD) instructions and the super scalar pipeline structure. Moreover, we introduce a parallel-pass method for fast implementation of EBCOT. This method reduces the processing time of EBCOT by processing the three coding passes of the same bit-plane in parallel. Experimental results show that our developed Motion-JPEG2000 DSP system meets the common requirement of the real-time video coding [30 frames/s (fps)] and is proven to be a practical and efficient DSP solution.