Title :
Memory reduction by Haar wavelet transform for MPEG decoder
Author :
Shih, C.-W.J. ; Nam Ling ; Ogunfunmi, T.
Author_Institution :
Dept. of Electr. Eng., Santa Clara Univ., CA, USA
Abstract :
In MPEG-2 HDTV, the bandwidth and memory size requirements are very large. We present a simple algorithm that requires low complexity hardware for the MPEG-2 decoder memory reduction. Our algorithm is based on the Haar wavelet transform (HWT), with no multipliers needed. Following the HWT, we use a variable-length coder to compress the data before storing them in the memory for future references. Our technique cuts down the memory requirement from 12 Mbytes to 7 Mbytes for the 4:2:0 HDTV application.
Keywords :
code standards; data compression; decoding; digital storage; high definition television; telecommunication standards; transform coding; variable length codes; video coding; wavelet transforms; DRAM; Haar wavelet transform; MPEG decoder; MPEG-2 HDTV; algorithm; bandwidth requirement; data compression; low complexity hardware; memory reduction; memory size; variable-length coder; Bandwidth; Bit rate; Decoding; HDTV; Hardware; Random access memory; Speech; Transform coding; Video compression; Wavelet transforms;
Conference_Titel :
Consumer Electronics, 1999. ICCE. International Conference on
Conference_Location :
Los Angeles, CA, USA
Print_ISBN :
0-7803-5123-1
DOI :
10.1109/ICCE.1999.785193
