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Conformance #716

closed

CP-1678: Use of JPEG Family Transfer Syntaxes rather than RLE for YBR_FULL​

Added by Jörg Riesmeier over 8 years ago. Updated almost 7 years ago.

Status:
Closed
Priority:
Normal
Category:
Library and Apps
Target version:
-
Start date:
2017-01-30
Due date:
% Done:

100%

Estimated time:
Module:
dcmdata, dcmimage, dcmjpeg, dcmjpls
Operating System:
Compiler:

Description

Check whether the DCMTK correctly handles the YBR_FULL color model:

Rationale for Correction

Traditionally,the YBR_FULL Photometric Interpretation has been used only with the RLE Transfer Syntax and only for Ultrasound​
images.​
Further, for US images, the Planar Configuration for YBR_FULL is constrained to 1, since that is the only Planar Configuration used​
for RLE.​
The YBR_FULL Photometric Interpretation cannot be converted losslessly into RGB or YBR_RCT, so it is desirable to retain the​
YBR_FULL encoding when decompressing or recompressing with lossless/reversible JPEG family of Transfer Syntaxes.​
The JPEG family of Transfer Syntaxes use a Planar Configuration of 0, and there is no reason to constrain the Planar Configuration​
of uncompressed images.​
Accordingly, relax the constraint on US Planar Configuration in the IOD (but do not change the Media Application Profile).​
Note that there are currently no constrains on any other IODs wrt. use of YBR_FULL, only Ultrasound, and it is desirable that archives,​
toolkits and viewers be able to handle Photometric Interpretation, Planar Configuration and Transfer Syntaxes in a generic manner​
regardless of the IOD.​

Current status of the CP: Draft "01"


Related issues 2 (0 open2 closed)

Related to DCMTK - Conformance #717: CP-1653: Clarify Photometric Interpretations Permitted for Decompressed and Compressed Transfer Syntaxes​ClosedMarco Eichelberg2017-01-30

Actions
Related to DCMTK - Conformance #811: Check whether JPEG encoder is still standard conformantClosedMarco Eichelberg2018-02-08

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