BACKWARD-COMPATIBLE HDR CODECS WITH TEMPORAL SCALABILITY

    公开(公告)号:US20170295382A1

    公开(公告)日:2017-10-12

    申请号:US15481015

    申请日:2017-04-06

    IPC分类号: H04N19/98 H04N19/31 H04N19/50

    摘要: A processor for video coding receives a full-frame rate (FFR) HDR video signal and a corresponding FFR SDR video signal. An encoder generates a scalable bitstream that allows decoders to generate half-frame-rate (HFR) SDR, FFR SDR, HFR HDR, or FFR HDR signals. Given odd and even frames of the input FFR SDR signal, the scalable bitstream combines a base layer of coded even SDR frames with an enhancement layer of coded packed frames, where each packed frame includes a downscaled odd SDR frame, a downscaled even HDR residual frame, and a downscaled odd HDR residual frame. In an alternative implementation, the scalable bitstream combines four signals layers: a base layer of even SDR frames, an enhancement layer of odd SDR frames, a base layer of even HDR residual frames and an enhancement layer of odd HDR residual frames. Corresponding decoder architectures are also presented.

    Transmitting Display Management Metadata Over HDMI
    6.
    发明申请
    Transmitting Display Management Metadata Over HDMI 有权
    通过HDMI传输显示管理元数据

    公开(公告)号:US20160241829A1

    公开(公告)日:2016-08-18

    申请号:US15025212

    申请日:2014-09-30

    摘要: In an embodiment, a source video signal comprising reference code values and mapping function parameters for one or more mapping functions to map the reference code values to device-specific pixel values. The reference code values and the mapping function parameters are combined into first video frames in a first video signal format. The mapping function parameters represent DM metadata carried in the first video frames. Second video frames in a second video signal format are generated based on the first video frames in the first video signal format and a mapping between the first video signal format and the second video signal format. The second video frames are sent to a video sink device through the video link in an encoded video signal of the second video signal format.

    摘要翻译: 在一个实施例中,源视频信号包括用于一个或多个映射函数的参考码值和映射函数参数,以将参考码值映射到特定于设备的像素值。 将参考码值和映射函数参数以第一视频信号格式组合成第一视频帧。 映射函数参数表示在第一视频帧中携带的DM元数据。 基于第一视频信号格式的第一视频帧和第一视频信号格式与第二视频信号格式之间的映射生成第二视频信号格式的第二视频帧。 第二视频帧通过第二视频信号格式的编码视频信号中的视频链路发送到视频宿设备。

    DISTRIBUTION OF MULTI-FORMAT HIGH DYNAMIC RANGE VIDEO USING LAYERED CODING
    7.
    发明申请
    DISTRIBUTION OF MULTI-FORMAT HIGH DYNAMIC RANGE VIDEO USING LAYERED CODING 审中-公开
    使用分层编码的多格式高动态范围视频分配

    公开(公告)号:US20160014422A1

    公开(公告)日:2016-01-14

    申请号:US14772051

    申请日:2014-02-14

    摘要: An encoder receives an input enhanced dynamic range (EDR) image to be stored or transmitted using multiple coding formats in a layered representation. A layer decomposer generates a lower dynamic range (LDR) image from the EDR image. One or more base layer (BL) encoders encode the LDR image to generate a main coded BL stream and one or more secondary coded BL streams, where each secondary BL stream is coded in a different coding format than the main coded BL stream. A single enhancement layer (EL) coded stream and related metadata are generated using the main coded BL stream, the LDR image, and the input EDR image. An output coded stream includes the coded EL stream, the metadata, and either the main coded BL stream or one of the secondary coded BL streams. Computation-scalable decoding and display management processes for EDR images are also described.

    摘要翻译: 编码器以分层的形式接收使用多个编码格式存储或发送的输入增强动态范围(EDR)图像。 层分解器从EDR图像生成较低的动态范围(LDR)图像。 一个或多个基本层(BL)编码器对LDR图像进行编码以产生主编码BL流和一个或多个二次编码BL流,其中每个次BL流以与主编码BL流不同的编码格式进行编码。 使用主编码BL流,LDR图像和输入EDR图像来生成单个增强层(EL)编码流和相关元数据。 输出编码流包括编码的EL流,元数据以及主编码BL流或二次编码BL流中的一个。 还描述了EDR图像的计算可扩展解码和显示管理过程。