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Dynamically Adjustable and Scalable ROI Video Coding

机译:动态可调节和可扩展的ROI视频编码

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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:兴趣区(ROI)编码是可扩展视频编码(SVC)的未来应用中的理想特征,这是H.264 / AVC标准的扩展。对于那些SVC应用,解码器侧的用户通常希望接收包含所需ROI的高质量解码视频流,该视频流应从预先编码的可伸缩位流自适应地选择。在这项工作中,我们提出了一种新颖的动态可调节和可扩展的ROI视频编码方案,使得根据网络带宽和预定义设置,能够自适应地设定期望的ROI位置,大小,分辨率和比特率。这,反过来,将使得能够提供用于多个ROI的有效速率控制,从而使得能够自适应地可伸缩比特流中选择从多个ROI所需的投资回报率,并且自适应地改变ROI的空间分辨率,ROI视觉质量或分配给每个比特量ROI,根据带宽和用户的设置(即,根据用户的显示分辨率等)。

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