最終更新:2014-10-03 (金) 08:51:14 (2181d)  

カラーマッチングディスクリプタ
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概要

  • The Color Matching descriptor is an optional descriptor used to describe the color profile of the video data in an unambiguous way.
  • Only one instance is allowed for a given format and if present, the Color Matching descriptor shall be placed following the Video and Still Image Frame descriptors for that format.

フィールド

OffsetFieldSizeValueDescription
0bLength?1Constant6
1bDescriptorType1NumberCS_INTERFACE type
2bDescriptorSubType1NumberVS_COLORFORMAT
3bColorPrimaries?1Number
4bTransferCharacteristics?1Number
5bMatrixCoefficients?1Number

3:bColorPrimaries?

  • This defines the color primaries and the reference white. |0|Unspecified (Image characteristics unknown)
    1BT.709, sRGB (default)
    2BT.470-2 (M)
    3BT.470-2 (B, G)
    4SMPTE 170M
    5SMPTE 240M
    6-255Reserved

4:bTransferCharacteristics?

  • This field defines the opto-electronic transfer characteristic of the source picture also called the gamma function.
    0Unspecified (Image characteristics unknown)
    1BT.709 (default)
    2BT.470-2 M
    3BT.470-2 B, G
    4SMPTE 170M
    5SMPTE 240M
    6Linear (V = Lc)
    7sRGB (very similar to BT.709)
    8-255Reserved

5:bMatrixCoefficients?

  • Matrix used to compute luma and chroma values from the color primaries.
    0Unspecified (Image characteristics unknown)
    1BT. 709
    2FCC
    3BT.470-2 B, G
    4SMPTE 170M (BT.601, default)
    5SMPTE 240M
    6-255Reserved

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