Image analysis – Image compression or coding – Including details of decompression
Patent
1997-04-04
2000-01-04
Au, Amelia
Image analysis
Image compression or coding
Including details of decompression
382235, 375228, H04N 1702
Patent
active
060118687
ABSTRACT:
A bitstream quality analysis system includes a demultiplexer, a bitstream quality analyzer, and a graphical user interface. The demultiplexer receives a bitstream and separates from the bitstream at least one elementary bitstream that includes a video elementary bitstream. The bitstream quality analyzer receives the video elementary bitstream from the demultiplexer and parses the video elementary bitstream to extract parameters characterizing the video elementary bitstream. The bitstream quality analyzer provides the extracted parameters to the graphical user interface, which displays the extracted parameters characterizing the video elementary bitstream. A user can monitor the video elementary bitstream at varying levels of detail, and can perform varying levels of quality analysis on the video elementary bitstream. Dependent on the level of monitoring an quality analysis selected by the user, the bitstream quality analyzer provides information relating to buffer usage and coding efficiency, and can predict the quality of the fully decoded video sequence without fully decoding the video elementary bitstream and without using the original video sequence.
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Huang et al., "An Interactive MPEG-1 Browsing System", IEEE Transactions on Consumer Electronics, vol. 42, No. 3, pp. 566-572, Aug. 1996.
Beakley et al., "Video Compression: The Need for Testing" SMPTE Advanced Television and Electronic Imaging Conference, pp. 742-750, Nov. 1995.
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Hewlett Packard "Test and Measurement News Online", Aug. 1995.
Interra MPROBE 110 product datasheet, May 5, 1997.
Wandel & Goltermann DTS-A product datasheet--date unknown.
Leonard Mark A.
Liu Samson J.
Ong Chong T.
van den Branden Christian J.
Au Amelia
Hewlett--Packard Company
Prikockis Larry J.
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