Apparatus and Methods for Encoding, Decoding and Representing High Dynamic Range Images
    2.
    发明申请
    Apparatus and Methods for Encoding, Decoding and Representing High Dynamic Range Images 有权
    用于编码,解码和表示高动态范围图像的装置和方法

    公开(公告)号:US20150003537A1

    公开(公告)日:2015-01-01

    申请号:US14488488

    申请日:2014-09-17

    IPC分类号: H04N19/44 H04N19/98

    摘要: A data structure defining a high dynamic range image comprises a tone map having a reduced dynamic range and HDR information. The high dynamic range image can be reconstructed from the tone map and the HDR information. The data structure can be backwards compatible with legacy hardware or software viewers. The data structure may comprise a JFIF file having the tone map encoded as a JPEG image with the HDR information in an application extension or comment field of the JFIF file, or a MPEG file having the tone map encoded as a MPEG image with the HDR information in a video or audio channel of the MPEG file. Apparatus and methods for encoding or decoding the data structure may apply pre- or post correction to compensate for lossy encoding of the high dynamic range information.

    摘要翻译: 定义高动态范围图像的数据结构包括具有减小的动态范围和HDR信息的色调映射。 可以从色调图和HDR信息重建高动态范围图像。 数据结构可以与传统硬件或软件查看器向后兼容。 数据结构可以包括具有编码为JPEG图像的色调映射的JFIF文件,其中HDR信息在JFIF文件的应用程序扩展或注释字段中,或具有编码为具有HDR信息的MPEG图像的色调映射的MPEG文件 在MPEG文件的视频或音频通道中。 用于对数据结构进行编码或解码的装置和方法可以在校正前或之后应用以补偿高动态范围信息的有损编码。