The DISCOVER CODEC EVALUATION
This web page presents the detailed evaluation of the Wyner-Ziv monoview video codec developed in the context of the DISCOVER project, highlighting its performance strengths and weaknesses. For such purpose, it is included here a significant set of results presented in a very structured way to ease its readability. This set of results is very likely the most exhaustive performance evaluation ever made in the Wyner-Ziv video coding arena.
The architecture and techniques employed by the DISCOVER codec are described in detail in:
X. Artigas, J. Ascenso, M. Dalai, S. Klomp, D. Kubasov, M. Ouaret, "The DISCOVER codec: Architecture, Techniques and Evaluation", Picture Coding Symposium 2007, Lisbon, Portugal. (pdf)
The DISCOVER codec evaluation is organized as follows:
- Test Conditions: Precise and realistic test conditions are first defined.
- Forward Channel: The performance of the forward channel is evaluated, e.g. in terms of rate-distortion performance, bitplane compression factor and decoded quality (PSNR) along time.
- Feedback Channel: The backward channel is also evaluated in terms of bitrate consumption and several other metrics such as the number of requests (which is related to the delay).
- Complexity Issues: Complexity evaluation of both the encoder and decoder.