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A new algorithm and its implementation for frame recompression

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1 Author(s)
Tae Young Lee ; Hynix Semicond. Inc, Seoul, South Korea

An algorithm and its implementation to recompress video frame data, which is to be stored into external memory, are proposed, thereby enabling reduction of memory requirements and bandwidth. To support random access capability, frames are organized as 1×8-pixel arrays, which are then compressed into 32-bit segments. The compression ratio is fixed at 50%. For both compression efficiency and low complexity, the modified Hadamard transform (MHT) and Golomb-Rice (GR) coding are utilized. Objective and subjective video quality assessments are performed. Efficient hardware designs including Golomb-Rice encoding/decoding and packing/unpacking are also proposed to reduce the total compression/decompression latency cycles. The proposed hardware designs are suitable for the integration with MPEG-2 decoders thanks to fast operation and simple interface logic

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:47 ,  Issue: 4 )

Date of Publication:

Nov 2001

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