Computed Radiography ImageCIOD
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Grayscale Softcopy Presentation StateCIOD
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Blending Softcopy Presentation StateCIOD
Basic Structured DisplayCIOD
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Basic Voice Audio WaveformCIOD
12-Lead ECGCIOD
General ECGCIOD
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Routine Scalp ElectroencephalogramCIOD
ElectromyogramCIOD
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General 32-bit ECGCIOD
Basic Text SRCIOD
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Key Object Selection DocumentCIOD
Mammography CAD SRCIOD
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Procedure LogCIOD
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Macular Grid Thickness and Volume ReportCIOD
Implantation Plan SR DocumentCIOD
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Radiopharmaceutical Radiation Dose SRCIOD
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Raw DataCIOD
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Spatial RegistrationCIOD
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Ophthalmic Photography 8 Bit ImageCIOD
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Stereometric RelationshipCIOD
Hanging ProtocolCIOD
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Real World Value MappingCIOD
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SegmentationCIOD
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Surface SegmentationCIOD
Color PaletteCIOD
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Lensometry MeasurementsCIOD
Autorefraction MeasurementsCIOD
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Generic Implant TemplateCIOD
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Corneal Topography MapCIOD
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Parametric MapCIOD
PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
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Clinical Trial StudyUModule - Study
General SeriesMModule - Series
Parametric Map SeriesMModule - Series
Clinical Trial SeriesUModule - Series
Frame of ReferenceMModule - Frame of Reference
SynchronizationUModule - Frame of Reference
General EquipmentMModule - Equipment
Enhanced General EquipmentMModule - Equipment
General AcquisitionUModule - Acquisition
Multi-Resolution PyramidUModule - Multi-Resolution Pyramid
General ImageMModule - Image
General ReferenceUModule - Image
Microscope Slide Layer Tile OrganizationCModule - Image
Image PixelCModule - Image
Floating Point Image PixelCModule - Image
Double Floating Point Image PixelCModule - Image
Parametric Map ImageMModule - Image
Multi-frame Functional GroupsMModule - Image
Multi-frame DimensionMModule - Image
Palette Color Lookup TableCModule - Image
(0028,1101) Red Palette Color Lookup Table Descriptor1US or SS
(0028,1102) Green Palette Color Lookup Table Descriptor1US or SS
(0028,1103) Blue Palette Color Lookup Table Descriptor1US or SS
(0028,1199) Palette Color Lookup Table UID3Unique Identifier
(0028,1201) Red Palette Color Lookup Table Data1COther Word String
(0028,1202) Green Palette Color Lookup Table Data1COther Word String
(0028,1203) Blue Palette Color Lookup Table Data1COther Word String
(0028,1221) Segmented Red Palette Color Lookup Table Data1COther Word String
(0028,1222) Segmented Green Palette Color Lookup Table Data1COther Word String
(0028,1223) Segmented Blue Palette Color Lookup Table Data1COther Word String
Cardiac SynchronizationUModule - Image
Respiratory SynchronizationUModule - Image
Bulk Motion SynchronizationUModule - Image
Acquisition ContextMModule - Image
DeviceUModule - Image
SpecimenUModule - Image
Common Instance ReferenceCModule - Image
SOP CommonMModule - Image
Frame ExtractionCModule - Image
Wide Field Ophthalmic Photography Stereographic Projection ImageCIOD
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Tractography ResultsCIOD
RT Brachy Application Setup Delivery InstructionCIOD
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CT Performed Procedure ProtocolCIOD
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Protocol ApprovalCIOD
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Ophthalmic Optical Coherence Tomography En Face ImageCIOD
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Basic DirectoryCIOD

Built with by Innolitics, a team of medical imaging software developers.

Data synced with official DICOM standard on 18 April 2024. The DICOM Standard is under continuous maintenance, and the current official version is available at http://www.dicomstandard.org/current/. DICOM Parts 3, 4, and 6, © NEMA. Please note that the most recent PDF version of the standard is the official reference, and should checked when making technical decisions.

Segmented Green Palette Color Lookup Table Data Attribute

Tag(0028,1222)
TypeConditionally Required (1C)
KeywordSegmentedGreenPaletteColorLookupTableData
Value Multiplicity1
Value RepresentationOther Word String (OW)

Segmented Green Palette Color Lookup Table Data. Required if segmented data is used in an Image IOD or Color Palette IOD; shall not be present in a Presentation State IOD See Section C.7.9.2 for further explanation.

Color Palette IOD

A.58 Color Palette IOD

A.58.1 Color Palette IOD Description

A Color Palette entity specifies a color palette suitable for application to a grayscale image or parametric map.

A.58.2 Color Palette IOD Entity-Relationship Model

A Color Palette is not related to other Information Entities of the DICOM real-world model, as it is not associated with a specific Patient. The E-R model for the Color Palette IOD is shown in Figure A.58.2-1.

Figure A.58.2-1. Color Palette IOD E-R Model


A.58.3 Color Palette IOD Module Table

Table A.58.3-1 lists the Modules that make up the Color Palette IOD.

Table A.58.3-1. Color Palette IOD Modules

IE

Module

Reference

Usage

Color Palette

SOP Common

C.12.1

M

Color Palette Definition

C.28.1

M

Palette Color Lookup Table

C.7.9

M

ICC Profile

C.11.15

M


Note

The number of bits for each entry in the Lookup Table Data is constrained in the Palette Color Lookup Table Module to be 8 in this IOD.

Section C.7.9.2

C.7.9.2 Segmented Palette Color Lookup Table Data

The Segmented Palette Color Lookup Table Data (0028,1221-1223) is stored as a series of segments, see Table C.7-23. When the segments are expanded into the actual lookup table data, it shall have the number of table entries specified by the first value of the Palette Color Lookup Table Descriptors (0028,1101-1103), Number of Table Entries.

These lookup tables shall be used only when segmented lookup table data use is desirable and there is a single sample per pixel (single image plane) in the image.

Table C.7-23. Compressed Palette Color Lookup Table Data

Segment 0

Segment 1

Segment n


There are currently three types of segments: discrete, linear, and indirect. The segments type is identified by the opcodes in Table C.7-24.

Table C.7-24. Segment Types

Opcode

Segment type

0

Discrete

1

Linear

2

Indirect

3 & above

reserved


C.7.9.2.1 Discrete Segment Type

The discrete segment is used to represent a series of palette components that are not monotonic with respect to their predecessors or successors. The Segment Length indicates the number of lookup table entries.

The format of the Discrete Segment Type shall be as in Table C.7-25.

Table C.7-25. Discrete Segment Type

Segment Opcode = 0

Segment Length

Segment Length number of lookup table entries


C.7.9.2.2 Linear Segment Type

The linear segment represents a series of palette components whose values may be represented by a straight line.

X = palette address, Y = Value contained in the palette.

(X0, Y0) = end of the previous segment

(X0 + Segment Length, Y1) = end of this linear segment

Where: Y1 is contained in the data portion of this segment.

During expansion, the application should "connect" the previous segment's endpoint, (X0, Y0), with this segment's endpoint, (X0 + Segment Length, Y1) using a straight line, by computing the values for each point between the endpoints.

Note

Because the linear segment uses the end point from the previous segment, a linear segment can not be the first segment.

The linear segment's format shall be as in Table C.7-26.

Table C.7-26. Linear Segment Type

Segment Opcode = 1

Segment Length

Y1


C.7.9.2.3 Indirect Segment Type

The indirect segment allows the re-use of repetitive regions within lookup table without respecifying the segment. The opcode is followed by the number of segments to copy and one offset pointer to the first segment to copy. The byte offset is relative to the beginning of the lookup table. For example, if an indirect segment wants to point to the first segment, then the offset will be zero. The offset is a 32 bit value but is stored in the segment as a least significant 16 bit value followed by a most significant 16 bit value. An indirect segment shall not point to or copy another indirect segment. This avoids the need for recursion and also avoids the possibility of infinite loops.

The indirect segment's format shall be as follows:

Table C.7-27. Indirect Segment Type

Segment Opcode = 2

Number of segments to copy

Least significant 16 bits of byte offset to first segment to copy

Most significant 16 bits of byte offset to first segment to copy