Region-based parametric motion segmentation using color information
Graphical Models and Image Processing
A Model of Saliency-Based Visual Attention for Rapid Scene Analysis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Motion-based segmentation and contour-based classification of video objects
MULTIMEDIA '01 Proceedings of the ninth ACM international conference on Multimedia
Mean Shift: A Robust Approach Toward Feature Space Analysis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Rate-Distortion Based Video Compression: Optimal Video Frame Compression and Object Boundary Encoding
An Overview of MPEG-4 Object-Based Encoding Algorithms
ITCC '01 Proceedings of the International Conference on Information Technology: Coding and Computing
Object-Based Video Coding Using Pixel State Analysis
ICPR '04 Proceedings of the Pattern Recognition, 17th International Conference on (ICPR'04) Volume 3 - Volume 03
Object-based coding for long-term archive of surveillance video
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 04
Dynamic Bit Allocation for Multiple Video Object Coding
IEEE Transactions on Multimedia
A low-complexity region-based video coder using backward morphological motion field segmentation
IEEE Transactions on Image Processing
Automatic foveation for video compression using a neurobiological model of visual attention
IEEE Transactions on Image Processing
Unsupervised video segmentation based on watersheds and temporal tracking
IEEE Transactions on Circuits and Systems for Video Technology
MPEG-4 rate control for multiple video objects
IEEE Transactions on Circuits and Systems for Video Technology
Rate control and bit allocation for MPEG-4
IEEE Transactions on Circuits and Systems for Video Technology
Scalable rate control for MPEG-4 video
IEEE Transactions on Circuits and Systems for Video Technology
A robust and adaptive rate control algorithm for object-based video coding
IEEE Transactions on Circuits and Systems for Video Technology
Rate-distortion optimal bit allocation for object-based video coding
IEEE Transactions on Circuits and Systems for Video Technology
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This paper presents a novel MPEG-4 priority-based multiple video objects coding system integrating User Visual Attention Model (UVAM) and Dynamic Bit Allocation (DBA) rate control mechanism. In the proposed system, the importance of individual objects is defined automatically and the coding parameters are adaptively adjusted so that the perceptual quality of important objects is maximized. The first contribution of the paper is an object-based UVAM utilizing a two-level structure and a blob extraction algorithm. Following that, two DBA algorithms are designed for object-based coding quality control in which weighted bits are allocated to prioritized single or group of video objects. Experimental results confirm that the defined automatic object-based priority is consistent with the observation of human visual system and the coding quality is maximized for the most important object and group of objects. In addition, the proposed system provides object-based coding flexibility and improved efficiency of utilizing coding resources. It offers key techniques to ensure the quality of services for real-time content-based video coding and streaming systems.