A state-free causal video encoding paradigm

Anshul Sehgal, Ashish Jagmohan, Narendra Ahuja

Research output: Contribution to conferencePaperpeer-review


A commonly encountered problem in the communication of predictively encoded video is that of predictive mismatch or drift. The problem of predictive mismatch manifests itself in numerous communication scenarios, including on-demand streaming, real-time streaming and multicast streaming. This paper proposes a state-free video encoding architecture that alleviates this problem. The main benefit of state-free encoding is that there is no need for the encoder and the decoder to maintain the same state, or equivalently, predict using the same predictor. This facilitates robust communication of causally encoded media. The proposed approach is based on the Wyner-Ziv theorem in Information Theory. Consequently, it leverages the superior performance of coset codes for the Wyner-Ziv problem for predictive coding. A video codec, with state-free functionality, based on the H.26L encoding standard is proposed. The performance of the proposed codec is within 1-2.5 dB of the H.26L encoder.

Original languageEnglish (US)
Number of pages4
StatePublished - Dec 16 2003
EventProceedings: 2003 International Conference on Image Processing, ICIP-2003 - Barcelona, Spain
Duration: Sep 14 2003Sep 17 2003


OtherProceedings: 2003 International Conference on Image Processing, ICIP-2003

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering


Dive into the research topics of 'A state-free causal video encoding paradigm'. Together they form a unique fingerprint.

Cite this