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In recent years, various approaches have been investigated towards blind image quality assessment (IQA) with high accuracy and low complexity. In this paper we develop a pre-saliency map based blind IQA method, which takes advantage of saliency information in prior of quality prediction for performance enhancement by two steps. 1) We split the image into patches and design a convolution neural network...
Video streaming over networks has grown rapidly in recent years. Increasing focus has gradually turned from Quality of Service (QoS) awareness to user Quality of Experience (QoE) awareness. In this paper, we propose a unified QoE prediction framework for HEVC encoded video streaming. Firstly, the impact of network impairment on QoE is modelled by packet loss rate. Secondly, features of HEVC encoding...
This paper presents an area-efficient approximate method for 32-point transform which is one of the most area-consuming parts in High Efficiency Video Coding (HEVC) applications. Compared to prior literatures, this work reduces the hardware cost of transform by 1) eliminating all the arithmetic operations of 6 least significant bits (LSB), 2) presenting a low-delay method for generating carry propagation...
Video streaming over networks has grown rapidly in recent years. Increasing focus has gradually turned from quality of service awareness to end viewer’s quality of experience (QoE) awareness. For multi-user video streaming services, videos are encoded and transmitted through a bandwidth-limited wireless networks. Therefore, proper encoder settings for videos are required to satisfy the total channel...
Video streaming over networks has grown rapidly in recent years. Increasing focus has gradually turned from Quality of Service (QoS) awareness to user Quality of Experience (QoE) awareness. In this paper, we propose a subjective QoE model based HEVC encoder adaptation scheme for multi-user video streaming. Firstly, the impact of HEVC encoder on video streams is investigated with different configurations...
The latest High Efficiency Video Coding (HEVC/H.265) obtains 50% bit rate reduction than H.264/AVC standard with comparable quality, but at the cost of high computational complexity. Inter prediction accounts for large complexity and merge mode is one of the most important new features introduced in HEVC. To address this issue, this paper utilizes the merge mode to accelerate inter prediction by three...
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