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In this paper, we propose a quality metric for video transmitted over HTTP adaptive streaming (HAS). Perceived video quality in HAS strongly depends on the employed rate adaptation mechanisms, transmission conditions and buffer filling levels. Predicting perceived quality in HAS is an open problem, due to the lack of appropriateness of existing metrics. To overcome this problem, a quality metric based...
Variable Size Block-Matching Super-Resolution covers a set of techniques which objective is to improve the resolution of a video sequence or a single frame considering variable sized Macro-Blocks. In this paper, this approach is combined with a Multi-Camera system to take advantage from the spatial and temporal correlations between frames.
Texture compression is an important tool in real time texture mapping on several levels. Besides from increasing sampling performance due to cache efficiency and lower memory requirements, it can significantly decrease texture loading times. In bandwidth constrained situations, a texture streaming system is not always able to load the required texture data in time, either stalling the visualization...
A prototype UHDTV video coding system with spatio-temporal down-/up-sampling is proposed. The system prereduces the spatial resolutions and/or frame rates of source UHDTV videos to 2K 60P before being encoded by a standardized codec such as HEVC/H.265. On the reception side, the decoded video is up-sampled to 4K 120P, 4K 60P, or 2K 120P resolutions depending on the specifications of the displays....
This paper presents the architecture of the direct display interface including video post-processing which is dedicated for a programmable multimedia platform for video enhancement of 8K (7680×4320) UHD (Ultra High Definition) TV at 60 frames per second. The proposed direct display interface obtains large quantities of data from 4 clusters of the reconfigurable processors simultaneously, and transfers...
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