Bug #1068
open
Check whether Frame Type (0008,9007) also needs to be updated when using lossy compression
0%
Description
While documenting the issue described in Bug #1056, it became apparent that probably also the Frame Type (0008,9007) Attribute needs to be updated when compressing a DICOM image in a lossy manner.
In this context, it should also be checked whether "DERIVED" is always the correct Value 1 for the Image Type (0008,0008) Attribute. For some IODs (e.g. Enhanced CT and MR), there is a third Enumerated Value: MIXED. See PS3.3 Table C.8-127 for details.
Updated by Jörg Riesmeier over 2 years ago
- Related to Bug #1056: DcmCodec::updateImageType() adds Image Type (0008,0008) with incorrect value added
Updated by Marco Eichelberg about 1 year ago
- Related to Bug #1069: Compression encoders do not handle Enhanced Multiframe images correctly added
Updated by Marco Eichelberg about 1 year ago
Frame Type (0008,9007) is only used in Enhanced Multiframe images. It describes the same properties as Image Type (0008,0008) does, but on a frame-to-frame basis. After lossy compression, all Frame Type (0008,9007) attributes should have value 1 set to "DERIVED", and, therefore, Image Type (0008,0008) value 1 will also be "DERIVED" and never "MIXED".