A.8 SMPTE ST 2110-20 Uncompressed Progressive Active Video Transfer Syntax

A.8 SMPTE ST 2110-20 Uncompressed Progressive Active Video Transfer Syntax (Current)
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This Transfer Syntax is used in a DICOM-RTV Metadata Flow in order to describe the accompanying [SMPTE ST 2110-20] Video Flow.

DICOM Attributes

Samples per Pixel (0028,0002)
Photometric Interpretation (0028,0004)
Bits Allocated (0028,0100)
Bits Stored (0028,0101)
High Bit (0028,0102)

are still applicable with some accommodations below.

As DICOM Photometric Interpretation (0028,0004) Values YBR_FULL, YBR_FULL_422, YBR_PARTIAL_420 are based on CCIR 601 (aka BT.601), DICOM-RTV supports only the following:

[SMPTE ST 2110-20] YCbCr-4:4:4 sampling system
[SMPTE ST 2110-20] RGB sampling system
[SMPTE ST 2110-20] YCbCr-4:2:2 sampling system
[SMPTE ST 2110-20] YCbCr-4:2:0 sampling system

Table A.8-1 describes the different color resolution.

Table A.8-1. DICOM Attributes for different color resolution

Bit Depth	Samples per Pixel (0028,0002)	Bits Allocated (0028,0100)	Bits Stored (0028,0101)	High Bit (0028,0102)
8	3	8	8	7
10	3	16	10	9
12	3	16	12	11
16	3	16	16	15

The way of encoding pixels shall respect SMPTE ST2110-20.

Note

This encoding is different than the encoding of Pixel Data (7FE0,0010). Example, for YBR_FULL_422 10 bits:

- SMPTE ST 2110-20 Video Flow YCbCr 4:2:2 10 bits

 0                   1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|   C'B00 (10 bits) |   Y'00 (10 bits)  |   C'R00 (10 bits) |   Y'01 (10 bits)  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

- DICOM Pixel Data (7FE0,0010) YBR_FULL_422 10 bits

 0                   1                   2                   3                   4                   
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|   Y'00 (10 bits)  |0|0|0|0|0|0|    Y'01 (10 bits) |0|0|0|0|0|0|   C'B00 (10 bits) |0|0|0|0|0|0|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

    5                   6
8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   C'R00 (10 bits) |0|0|0|0|0|0|
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

A DICOM Transfer Syntax for SMPTE ST 2110-20 Uncompressed Progressive Active Video shall be identified by a UID of

1.2.840.10008.1.2.7.1 corresponding to [SMPTE ST 2110-20] for the progressive video.

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