DICOM PS3.3 2021b - Information Object Definitions

C.27.5 Point Cloud Module (Current)
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### C.27.5 Point Cloud Module

Table C.27.5-1 specifies the Attributes of the Point Cloud Module.

Table C.27.5-1. Point Cloud Module Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Surface Points Sequence | (0066,0011) | 1 | The point positions representing vertices of the surface. Only one Item shall be included in the Sequence.
>Include Table C.27-2 “Points Macro Attributes” |
>Segmented Property Category Code Sequence | (0062,0003) | 3 | Sequence defining the general category of the property the surface point set represents. Only a single Item is permitted in this Sequence.
>>Include Table 8.8-1 “Code Sequence Macro Attributes” | BCID 7150 “Segmentation Property Categories”.
>Segmented Property Type Code Sequence | (0062,000F) | 3 | Sequence defining the specific property the surface point set represents. ### Note "Property" is used in the sense of meaning "what the surface represents", whether it be a physical or biological object, be real or conceptual, having spatial, temporal or functional extent or not. I.e., it is what the segment "is" (as opposed to some feature, attribute, quality, or characteristic of it, like color or shape or size). Only a single Item is permitted in this Sequence.
>>Include Table 8.8-1 “Code Sequence Macro Attributes” | No Baseline CID is defined.
Surface Point Presentation Value Data | (0080,0006) | 3 | Contains a vector of P-Values to assign a gray value to each point. The number of values shall be equal to the value of Number Of Surface Points (0066,0015) in the Points Macro. Each value shall correspond to the respective point in the Point Coordinates Data (0066,0016).
Surface Point Color CIELab Value Data | (0080,0007) | 3 | Contains a vector of color triplets to assign colors to each point. The number of triplets shall be equal to the value of Number Of Surface Points (0066,0015) in the Points Macro. The units are PCS-Values, and the value is encoded as CIELab. See Section C.10.7.1.1. Each triplet shall correspond to the respective point in the Point Coordinates Data (0066,0016).

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DICOM PS3.3 2021b - Information Object Definitions