- Read more about Fast Template Matching for Intra Prediction
- Log in to post comments
- Categories:
- Read more about Progressive Communication for Interactive Light Field Image Data Streaming
- Log in to post comments
Light field (LF) imaging captures multiple intensities and directions of light per pixel during acquisition in a 3D scene, so that novel images of different viewpoints or focal points can be synthesized. However, transmitting all LF data before viewer observation incurs a large startup delay. To avoid such delay, we propose a new interactive LF streaming framework, where a client periodically requests viewpoint images, and in response a server synthesizes and transmits each requested image as a carefully chosen sparse linear combination of sub-aperture images.
- Categories:
- Read more about INTEGRATING THOR TOOLS INTO THE EMERGING AV1 CODEC
- Log in to post comments
Over recent years there have been several efforts which aim to standardise a royalty-free video codec, such as Thor developed by Cisco, and AV1 developed by the Alliance for Open Media. In this paper we discuss how some compression tools in Thor were integrated into the emerging AV1 codec aiming to increase compression efficiency as well as to decrease computational complexity.
- Categories:
- Read more about GPGPU Implementation of VP9 in-loop deblocking filter and improvement for AV1 codec
- Log in to post comments
- Categories:
- Read more about Dictionary Learning-based Image Compression
- Log in to post comments
Dictionary learning based image compression has attracted a lot of research efforts due to the inherent sparsity of image contents. Most algorithms in the literature, however, suffer from two drawbacks. First, the atoms selected for image patch reconstruction scatter over the entire dictionary, which leads to a high coding cost. Second, the sparse representation of image patches is performed independently from the quantization of sparse coefficients, which may result in a sub-optimal solution.
- Categories:
- Read more about CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC
- Log in to post comments
There is an increasing consumer demand for high bit-depth 4:4:4 HD video data playback due to its superior perceptual visual quality compared with standard 8-bit subsampled 4:2:0 video data. Due to vast file sizes and associated bitrates, it is desirable to compress raw high bit-depth 4:4:4 HD video sequences as much as possible without incurring a discernible decrease in visual quality. In this paper, we propose a Coding Block (CB)-level perceptual video coding technique for HEVC named Full Color Perceptual Quantization (FCPQ).
- Categories:
- Read more about Low Complexity Video Coding Based on Spatial Resolution Adaptation
- Log in to post comments
In this paper, a novel spatial resolution adaptation approach for video compression is proposed. Its ability to dynamically apply downsampling to frames exhibiting low spatial detail delivers improved rate distortion performance, together with a reduction in computational complexity of the encoding process. This method is based on an experimental investigation of the dependence between the QP threshold, which determines when to encode lower resolution frames, and the distortion obtained after downsampling/upsampling.
- Categories:
- Categories:
- Read more about Correlation Model Selection for interactive video communication
- Log in to post comments
Interactive video communication has been recently proposed for multi-view videos. In this scheme, the server has to store the views as compact as possible, while being able to transmit them independently to the users, who are allowed to navigate interactively among the views, hence requesting a subset of them. To achieve this goal, the compression must be done using a model-based coding in which the correlation between the predicted view generated on the user side and the original view has to be modeled by a statistical distribution.
- Categories:
- Read more about Subspace Clustering via Independent Subspace Analysis Network
- Log in to post comments
- Categories: