DICOM PS3.5 2020e - Data Structures and Encoding

8.2.13 Constraints For SMPTE ST 2110-20 Uncompressed Active Video For DICOM-RTV

This section describes the constraints applying to pixel data carried in the DICOM-RTV Flow (separated from DICOM-RTV Metadata Flow) and fully described in [SMPTE ST 2110-20] .

The following table describes constraints on the [SMPTE ST 2110-20] Video Flow in terms of the valid values for the corresponding DICOM Attributes in the DICOM-RTV Metadata Flow:

Table 8.2.13-1. Constraints Applicable to Attributes describing Pixel Data

Samples per Pixel (0028,0002)

Bits Allocated (0028,0100)

Bits Stored (0028,0101)

High Bit (0028,0102)

3

8, 16, 16, 16

8, 10, 12, 16

7, 9, 11, 15


DICOM Photometric Interpretation is based on CCIR 601 (aka ITU-R BT.601), therefore some restrictions apply to the possible combination of Sampling System and Colorimetry parameters as stated by [SMPTE ST 2110-20] .

Table 8.2.13-2. List of supported SMPTE ST 2110-20 Parameter Combinations

SMPTE ST 2110-20

DICOM Photometric Interpretation (0028,0004)

Sampling system

Colorimetry

RGB

BT601

RGB

YCbCr-4:4:4

BT601

YBR_FULL

YCbCr-4:2:2

BT601

YBR_FULL_422

YCbCr-4:2:0

BT601

YBR_PARTIAL_420


Some other [SMPTE ST 2110-20] parameter combinations do not correspond to existing DICOM photometric interpretations, so their use is currently not permitted. Table 8.2.13-3 lists the unsupported combinations.

Table 8.2.13-3. List of unsupported SMPTE ST 2110-20 Parameter Combinations

SMPTE ST 2110-20

Sampling system

Colorimetry

RGB

BT2020, BT709, BT2100, ST2065-1, ST2065-3

YCbCr-4:4:4

BT2020, BT709, BT2100

YCbCr-4:2:2

BT2020, BT709, BT2100

YCbCr-4:2:0

BT2020, BT709, BT2100

CLYCbCr-4:4:4

BT2020

CLYCbCr-4:2:2

BT2020

CLYCbCr-4:2:0

BT2020

ICtCp-4:4:4

BT2100

ICtCp-4:2:2

BT2100

XYZ

XYZ

KEY


DICOM PS3.5 2020e - Data Structures and Encoding