Enhanced Side Information Generator with Accurate Evaluations in Block-Based Wyner-Ziv Video Coding
PSIVT '09 Proceedings of the 3rd Pacific Rim Symposium on Advances in Image and Video Technology
Enhanced spatially interleaved DVC using diversity and selective feedback
ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Encoder Rate Control for Pixel-Domain Distributed Video Coding without Feedback Channel
MUE '09 Proceedings of the 2009 Third International Conference on Multimedia and Ubiquitous Engineering
Practical distributed video coding over visual sensors
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Improved low delay distributed video coding
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Two-pass reconstruction in distributed video coding
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Prioritized side information correction for distributed video coding
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Distributed video coding with multiple side information
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Spatial-domain unidirectional DVC with side-information dependent correlation channel estimation
DSP'09 Proceedings of the 16th international conference on Digital Signal Processing
Studying the GOP size impact on the performance of a feedback channel-based Wyner-Ziv video codec
PSIVT'07 Proceedings of the 2nd Pacific Rim conference on Advances in image and video technology
Content adaptive GOP size control with feedback channel suppression in distributed video coding
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Noiseless coding of correlated information sources
IEEE Transactions on Information Theory
The rate-distortion function for source coding with side information at the decoder
IEEE Transactions on Information Theory
PRISM: A Video Coding Paradigm With Motion Estimation at the Decoder
IEEE Transactions on Image Processing
Overview of the H.264/AVC video coding standard
IEEE Transactions on Circuits and Systems for Video Technology
Enhanced Error Concealment With Mode Selection
IEEE Transactions on Circuits and Systems for Video Technology
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Context: Conventional video encoding is a computationally intensive process that requires a lot of computing resources, power and memory. Such codecs cannot be deployed in remote sensors that are constrained in terms of power, memory and computational capabilities. For such applications, distributed video coding might hold the answer. Objective: In this paper, we propose a distributed video coding (DVC) architecture that adheres to the principles of DVC by shifting the computational complexity from the encoder to the decoder and caters to low-motion scenarios like video conferencing and surveillance of hallways and buildings. Method: The architecture presented is block-based and introduces a simple yet effective classification scheme that aims at maximizing the use of skip blocks to exploit temporal correlation between consecutive frames. In addition to the skip blocks, a dynamic GOP size control algorithm is proposed that instantaneously alters the GOP size in response to the video statistics without causing any latency and without the need to buffer additional frames at the encoder. To facilitate real-time video delivery and consumption, iterative channel codes like low density parity check codes and turbo codes are not used and in their place a Bose-Chaudhuri-Hocquenghem (BCH) code with encoder rate control is used. Results: In spite of reducing the complexity and eliminating the feedback channel, the proposed architecture can match and even surpass the performance of current DVC systems making it a viable solution as a codec for low-motion scenarios. Conclusion: We conclude that the proposed architecture is a suitable solution for applications that require real-time, low bit rate video transmission but have constrained resources and cannot support the complex conventional video encoding solutions. Practical implications: The practical implications of the proposed DVC architecture include deployment in remote video sensors like hallway and building surveillance, video conferencing, video sensors that are deployed in remote regions (wildlife surveillance applications), and capsule endoscopy.