Accepted to 7 th Int . Workshop on Packet

نویسندگان

  • Stefan Horbelt
  • Jon Crowcroft
چکیده

We compare the performance of video compression algorithms in terms of compression ratio, video distortion and computation time in order to study the feasibility of a real time software videophone for 64 kbits/s channels, with exible user deened compression methods. We can combine and adjust the compression algorithms to the required bandwidth and video quality. We introduce the double logarithmic CORT Diagram , which is a novel, visual method to combine and evaluate video compression algorithms. The implemented algorithms are subsampling, block truncation coding (BTC), adaptive discrete cosine transform (ADTC) and conditional refreshment.

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تاریخ انتشار 1996