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As the concept of block level adaptivity becomes an important feature in recent video CODECs, block level adaptive quantization (BLAQ) is being considered in the High Efficiency Video Coding (HEVC) standard. The BLAQ is based on the assumption that each block should have its own quantization parameter (QP), which can adapt to the local content of video sequences much better, and hence the video encoder...
Local invariant features have been successfully used in image matching to cope with viewpoint change, partial occlusion, and clutters. However, when these factors become too strong, there will be a lot of mismatches due to the limited repeatability and discriminative power of features. In this paper, we present an efficient approach to remove the false matches and propagate the correct ones for the...
Invariant local image features have proven to be very successful in computer vision tasks involving partial occlusion and various image deformations. Even though the image features can be extracted in a high repeatability, their local appearance alone usually does not bring enough discriminative power to support a reliable matching, resulting in a relatively high number of outliers in the correspondence...
This paper presents a 2-D pipeline-based locally adaptive inter-view-temporal lifting scheme for scalable multi-view video coding. Instead of global temporal and inter-view correlation analysis based on the whole picture, the proposed method adopts locally adaptive inter-view-temporal correlation analysis based on the macroblocks. In addition, in order to reduce the memory requirement and computational...
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