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A software-based high-quality MPEG-2 encoder employing scene change detection and adaptive quantization

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3 Author(s)
Farin, D. ; Dept. of Comput. Sci. IV, Mannheim Univ., Germany ; Mache, N. ; de With, P.H.N.

The paper presents a new software-only MPEG encoder implementation which uses adaptive quantization and scene change detection to enhance image quality. Scene change detection is coupled to the bit-allocation process, providing a more constant image quality over time. Simultaneously, it is used to assign picture coding types to enable easy, lossless cutting at scene change positions in a later editing process. Furthermore, a new fast bit-rate estimation algorithm is proposed, which is accurate enough to avoid macroblock-level rate-control. Although our current implementation concentrates on an MPEG-2 implementation, all concepts are readily applicable to MPEG-4 encoders.

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:48 ,  Issue: 4 )

Date of Publication:

Nov 2002

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