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:
-
Samples per Pixel
-
Bits Allocated
-
Bits Stored
-
High Bit
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
|
|