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首页> 外文期刊>IEEE Transactions on Consumer Electronics >Simultaneous encoder for high-dynamic-range and low-dynamic-range video
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Simultaneous encoder for high-dynamic-range and low-dynamic-range video

机译：高动态范围和低动态范围视频的同步编码器

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摘要

High-dynamic-range (HDR) technology is an emerging video technology that allows displays to produce a higher range of luminance to better approximate the range of brightness perceived by the human eye. However, during the transition to this new technology, not all consumer devices will support the full range of luminance values offered by HDR. In order to also support these devices with lower dynamic ranges, content providers have to supply multiple dynamic range versions to provide the best experience to all viewers. This means that the processing cost to compress these versions will be multiplied by the number of versions. As a solution, this paper proposes a simultaneous encoder based on high efficiency video coding. This encoder reuses parts of the coding information generated during compression of an HDR video to accelerate the encoding of a low-dynamicrange (LDR) version of the same video. The proposed method speeds up the encoder 299 times with a bit rate increase of 12.4% compared to a non-accelerated encode of the LDR version. This is more than 90 times faster compared to stateof- the-art fast encoding algorithms and allows simultaneous encoding of the two versions for approximately the computational cost of a single encoder.
机译：高动态范围（HDR）技术是一种新兴的视频技术，它允许显示器产生更大范围的亮度，以更好地逼近人眼感知的亮度范围。但是，在向这项新技术过渡的过程中，并非所有的消费类设备都将支持HDR提供的所有亮度值范围。为了也以较低的动态范围支持这些设备，内容提供商必须提供多个动态范围版本，以向所有观众提供最佳体验。这意味着压缩这些版本的处理成本将乘以版本数量。作为解决方案，本文提出了一种基于高效视频编码的同步编码器。该编码器重复使用在HDR视频压缩期间生成的部分编码信息，以加快同一视频的低动态范围（LDR）版本的编码。与LDR版本的非加速编码器相比，该方法可将编码器的速度提高299倍，比特率提高12.4％。与最新的快速编码算法相比，它的速度快了90倍以上，并允许同时对两个版本进行编码，而单个编码器的计算成本却差不多。

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