Add Frame of Reference Module to Surface Scan Mesh and Point Cloud IODs Status Letter Ballot Date of Last Update 2020/09/08 Person Assigned David Clunie Submitter Name Kari Jyrkkälä Submission Date 2019/11/25 Correction Number CP-2031 Log Summary: Add Frame of Reference Module to Surface Scan Mesh and Point Cloud IODs Name of Standard PS3.3 Rationale for Correction: The Surface Scan Mesh and Surface Scan Point Cloud IODs need to contain the Frame of Reference Module, since the points they include are described in terms of an FoR UID. Add it. Correction Wording:

Surface Scan Mesh IOD Modules

IE	Module	Reference	Usage
Patient	Patient		M
	Clinical Trial Subject		U
Study	General Study		M
	Patient Study		U
	Clinical Trial Study		U
Series	General Series		M
	Clinical Trial Series		U
	Optical Surface Scanner Series		M
Frame of Reference	Frame of Reference	C.7.4.1	M
Equipment	General Equipment		M
	Enhanced General Equipment		M
Surface	Surface Mesh		M
	UV Mapping		U
	Scan Procedure		M
	Specimen		U
	SOP Common		M

Surface Scan Point Cloud IOD Modules

IE	Module	Reference	Usage
Patient	Patient		M
	Clinical Trial Subject		U
Study	General Study		M
	Patient Study		U
	Clinical Trial Study		U
Series	General Series		M
	Clinical Trial Series		U
	Optical Surface Scanner Series		M
Frame of Reference	Frame of Reference	C.7.4.1	M
Equipment	General Equipment		M
	Enhanced General Equipment		M
Surface	Point Cloud		M
	UV Mapping		U
	Scan Procedure		M
	Specimen		U
	SOP Common		M

Surface Mesh Module Attributes

Attribute Name	Tag	Type	Attribute Description
Number of Surfaces	(0066,0001)	1	Number of surfaces contained in the Instance. Shall be 1 or more. Shall be the same as the number of Items in Surface Sequence (0066,0002).
Surface Sequence	(0066,0002)	1	The surfaces that are described within the data. One or more Items shall be included in this Sequence. There shall be Number of Surfaces (0066,0001) Items in the Sequence. See .
...
>Surface Points Sequence	(0066,0011)	1	The point positions representing vertices of the surface. Only a single Item shall be included in this Sequence.
>>Include
...

Points Macro Attributes

Attribute Name	Tag	Type	Attribute Description
Number Of Surface Points	(0066,0015)	1	Specifies the number of points in the point set. See .
Point Coordinates Data	(0066,0016)	1	See
...

All Attributes within this ModuleMacro containing points or vectors are in x-y-z order. If multiple elements are encoded, the ordering is x1,y1,z1,…,xn,yn,zn. The points are in the coordinate system identified by the Frame of Reference UID (0020,0052). To map these points into the coordinate system of another SOP Instance a Spatial Registration Instance can be used.

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
...