Foveation-Based Error Resilience and Unequal Error Protection over Mobile Networks
Journal of VLSI Signal Processing Systems
IDMS/PROMS 2002 Proceedings of the Joint International Workshops on Interactive Distributed Multimedia Systems and Protocols for Multimedia Systems: Protocols and Systems for Interactive Distributed Multimedia
Predictive perceptual compression for real time video communication
Proceedings of the 12th annual ACM international conference on Multimedia
Real-time foveation techniques for low bit rate video coding
Real-Time Imaging
Proceedings of the 2006 symposium on Eye tracking research & applications
Recent advances in rate control for video coding
Image Communication
Predictive real-time perceptual compression based on eye-gaze-position analysis
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
A cross-layer approach for maximizing visual entropy using closed-loop downlink MIMO
EURASIP Journal on Advances in Signal Processing
Active, Foveated, Uncalibrated Stereovision
International Journal of Computer Vision
Optimal channel adaptation of scalable video over a multicarrier-based multicell environment
IEEE Transactions on Multimedia - Special issue on quality-driven cross-layer design for multimedia communications
High quality, low delay foveated visual communications over mobile channels
Journal of Visual Communication and Image Representation
Foveation embedded DCT domain video transcoding
Journal of Visual Communication and Image Representation
PPIQ: a probabilistic framework for image quality assessment
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Accurate and efficient method for smoothly space-variant Gaussian blurring
IEEE Transactions on Image Processing
Visual attention guided bit allocation in video compression
Image and Vision Computing
On optimizing H. 264/AVC rate control by improving R-D model and incorporating HVS characteristics
EURASIP Journal on Advances in Signal Processing
Saliency-based fidelity adaptation preprocessing for video coding
Journal of Computer Science and Technology - Special issue on natural language processing
Dynamic Bandwidth and Carrier Allocation for Video Broadcast/Multicast Over Multi-Cell Environments
Wireless Personal Communications: An International Journal
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Previously, fovcated video compression algorithms have been proposed which, in certain applications, deliver high-quality video at reduced bit rates by seeking to match the nonuniform sampling of the human retina. We describe such a framework here where foveated video is created by a nonuniform filtering scheme that increases the compressibility of the video stream. We maximize a new foveal visual quality metric. the foveal signal-to-noise ratio (FSNR) to determine the best compression and rate control parameters for a given target bit rate. Specifically, we establish a new optimal rate control algorithm for maximizing the FSNR using a Lagrange multiplier method defined on a curvilinear coordinate system. For optimal rate control, we also develop a piecewise R-D (rate-distortion)/R-Q (rate-quantization) model. A fast algorithm for searching for an optimal Lagrange multiplier λ* is subsequently presented. For the new models, we show how the reconstructed video quality is affected, where the FSNR is maximized, and demonstrate the coding performance for H.263,+,++/MPEG-4 video coding. For H.263/MPEG video coding, a suboptimal rate control algorithm is developed for fast, high-performance applications. In the simulations, we compare the reconstructed pictures obtained using optimal rate control methods for foveated and normal video. We show that foveated video coding using the suboptimal rate control algorithm delivers excellent performance under 64 kb/s