Region-oriented Video Coding Using Quadtree Optimization and the Mdl Principle

Region-oriented video coding using the MDL principle and quad-tree optimization

Motion-based object segmentation and estimation using the MDL principle

There are increasing demands for ultralow bit-rate video image transmission. We present a new formulation of moving object segmentation and motion estimation to quantify the potential gain in using object-oriented motion compensation in image sequence coding. Motivated by real-valued parameter estimation required in object-oriented motion-compensated video source coding, a framework motivated b...

Entropy-constrained Design of Quadtree Video Coding Schemes

The variable length code design of a complete quadtree-based video codec is addressed, in which we jointly optimize the entropy-coding for the parameters of motion-compensated prediction together with the residual coding. The quadtree coding scheme selected for this optimization allows easy access to the rate-distortion costs, thus making it possible to perform rate-distortion optimized bit all...

Rate-distortion constrained quadtree segmentation for stereoscopic video coding

In this paper, a rate-distortion framework is proposed to define a jointly optimal displacement vector field estimation ( DVFE ) and quadtree segmentation technique for stereo video coding. This technique achieves maximum reconstructed image quality under the constraint of a target bit rate for the coding of the displacement vector field, quadtree segmentation information, and the residual sign...

Rate-Complexity-Distortion Optimization for Quadtree-Based DCT Coding

In this paper, we study rate-complexity-distortion (R-C-D) tradeoffs for video coding, where we focus on the complexity of computing the inverse DCT. A quadtree coding approach is used and the quadtree is optimized based on the constraints of not only a rate budget but also decoding complexity budget. We employ a variable complexity algorithm (VCA) for the IDCT in order to obtain better complex...