Picture information conversion method and apparatus

Details Picture information conversion method and apparatus Picture information conversion method and apparatus

2006-03-14

2006-03-14

Kelley, Chris (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07012959

ABSTRACT:
Stable code rate control is performed in converting picture information. MPEG2 interlaced scanned compressed picture information (bitstream) is converted into the progressive scanned MPG4 compressed picture information (bitstream). An activity synthesis unit15synthesizes from the activity-based activity information in the MPEG2 compressed picture information (bitstream) the macroblock-based activity information in the MPEG4 compressed picture information (bitstream). An MPEG4 picture information encoding unit (I/P-VOP)11uses the so-synthesized activity information as the parameter for adaptive quantization at the time of encoding the MPEG4 picture information.

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“Field-to-Frame Transcoding with Spatial and Temporal Downsampling”, Susie L. Wee, John G. Apostolopoulos, and Nick Feamster, ICIP 99.

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