IEEE Transactions on Image Processing
Selective data pruning-based compression using high-order edge-directed interpolation
IEEE Transactions on Image Processing
Spatial and temporal up-conversion technique for depth video
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
A novel approach to FRUC using discriminant saliency and frame segmentation
IEEE Transactions on Image Processing
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In this paper, a novel, low-complexity motion vector processing algorithm at the decoder is proposed for motion-compensated frame interpolation or frame rate up-conversion. We address the problems of having broken edges and deformed structures in an interpolated frame by hierarchically refining motion vectors on different block sizes. Our method explicitly considers the reliability of each received motion vector and has the capability of preserving the structure information. This is achieved by analyzing the distribution of residual energies and effectively merging blocks that have unreliable motion vectors. The motion vector reliability information is also used as a prior knowledge in motion vector refinement using a constrained vector median filter to avoid choosing identical unreliable one. We also propose using chrominance information in our method. Experimental results show that the proposed scheme has better visual quality and is also robust, even in video sequences with complex scenes and fast motion.