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Dynamically adjustable and scalable ROI video coding

机译:动态可调和可扩展的ROI视频编码

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摘要

Regions-of-interest (ROI) coding is a desirable feature in future applications of Scalable Video Coding (SVC), which is the extension of the H.264/AVC standard. For those SVC applications, users at the decoder side usually wish to receive a high-quality decoded video stream, containing the desired ROI, which should be adaptively selected from the pre-encoded scalable bit-stream. In this work, we present a novel improved dynamically adjustable and scalable ROI video coding scheme, enabling to adaptively set desirable ROI location, size, resolution and bit-rate, according to the network bandwidth and predefined settings. This, in turn, will enable providing an effective rate control for multiple ROIs, thereby enabling adaptively selecting the required ROI from multiple ROIs in the scalable bit-stream, and adaptively changing ROI spatial resolution, ROI visual quality or amount of bits allocated for each ROI, according to the bandwidth and user's settings (i.e., according to the user's display resolution, etc.).
机译:感兴趣区域(ROI)编码是可伸缩视频编码(SVC)未来应用中的一项理想功能,它是H.264 / AVC标准的扩展。对于那些SVC应用,解码器端的用户通常希望接收包含所需ROI的高质量解码视频流,应从预编码的可伸缩比特流中自适应地选择该高质量视频流。在这项工作中,我们提出了一种新颖的改进的动态可调和可扩展的ROI视频编码方案,能够根据网络带宽和预定义设置来自适应地设置所需的ROI位置,大小,分辨率和比特率。反过来,这将能够为多个ROI提供有效的速率控制,从而能够从可伸缩比特流中的多个ROI自适应地选择所需的ROI,并自适应地更改ROI空间分辨率,ROI视觉质量或为每个分配的位数投资回报率,取决于带宽和用户的设置(即,根据用户的显示分辨率等)。

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