Download Digital Signal Processing for Multimedia Systems (Signal by Keshab K. Parhi, Takao Nishitami PDF

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By Keshab K. Parhi, Takao Nishitami

Addresses a big variety of multimedia functions, programmable and customized architectures for the implementations of multimedia structures, and mathematics architectures and layout methodologies. The booklet covers fresh functions of electronic sign processing algorithms in multimedia, offers high-speed and low-priority binary and finite box mathematics architectures, info VHDL-based implementation techniques, and extra.

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Extra resources for Digital Signal Processing for Multimedia Systems (Signal Processing (Marcel Dekker, Inc.), 1.)

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However, MPEG algorithms are robust to cell/packet loss problem. Quasirandom access capability of the video frame structure in MPEG algorithms terminates packet/cell loss error propagation. Also, the MPEG transport layer supports precise timing recovery through ATM network by incorporating digital phase lock mechanism. The systems aspect on the MPEG transport layer is addressed in Chapter 2. A much more convenient traffic dependent approach is now discussed in MPEG-4, where encoding process is carried out by objects in a video sequence.

2(a). The binary representation of the mid-point of the ith interval is then computed, and the first W(ai)-bits (after the point) is the arithmetic codeword for the symbol ai (for 1 5 i 5 L ) , where W ( U i ) = [lO&(l/Pi)l 1. 3 For the symbol set { a ,b} and the probability distribution of po = 1/4, p1 = 3/4, the interval [0,1] is partitioned into two sub-intervals, I ( a ) = [0,1/4] and I ( b ) = [1/4, I]. W i t h W ( a )= [[log, 41 + 1 = 3 and W ( b )= [log, 4/31 + 1 = 2, the arithmetic codes for the symbols a and b are computed as 001 and 10, which are the first 3 bit of the binary representation of 1/8 (the mid-point of the interval I ( a ) ) and the first 2 bits of the binary representation of 5 / 8 (the mid-point the interval I ( b ) ) , respectively.

86, no. 5, illay 1998. K. Parhi, VLSI Digital Signal Processing Systems: Design and I7ripkwiorit ( i t z o 7 ~ ,,John Wiley arid Sons, 1999. Chapter 2 Video Compression Keshab K. umn. 1 INTRODUCTION Digital video has many advantages over analog video. However, when the video signal is represented in digital format, the bandwidth is expanded substantially. 88 Giga bits per sec (Gb/sec). A two-hour HDTV movie requires about 414 giga bytes. Even with a capable storage device, there is no existing technology which can transmit and process motion video at such a high speed.

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