DICOM @ OFFIS

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 Forum: DCMTK - General   Topic: Compressing Parametric Map Instances with FloatPixelData

Posted: Fri, 2017-11-03, 13:47 

Replies: 5
Views: 91


Thanks, for all the answers. One conclusion I want to point out though: During an association negotation of Parametric Map between SCU and SCP one should not choose the JPEG Transfer Syntax (although that would work in combination with the regular integer Pixel Data attribute). Since at the time of ...

 Forum: DCMTK - General   Topic: Compressing Parametric Map Instances with FloatPixelData

Posted: Fri, 2017-11-03, 12:15 

Replies: 5
Views: 91


Hi Michael, I thought so as well, thanks for the answer. But in principle 16-Bit integer Parametric Map Instances could be encoded in JPEG, right? If this was the case this would mean that there are Parametric Maps that can be JPEG compressed and others not depending on the way the DICOM Parametric ...

 Forum: DCMTK - General   Topic: Compressing Parametric Map Instances with FloatPixelData

Posted: Fri, 2017-11-03, 11:17 

Replies: 5
Views: 91


Hello, is there any recommended Compression-TransferSyntax different from Deflated Transfer Syntax that can be used for compressing Parametric Map Instances with FloatPixelData attribute set (BitsAllocated=32 or even 64)? JPEG is not possible in this case I assume. (Note: dcmcjpeg +e1 with a Float P...

 Forum: DCMTK - General   Topic: JPEG Lossless compression with bit-depth=12 possible?

Posted: Sat, 2017-08-19, 16:17 

Replies: 3
Views: 328


Thanks for your answer. This was very helpful. Just one question to make sure that I understood you correctly in your previous post. Did you actually want to say instead of: "Since the process you are referring to is lossless, In both cases the pixel data will be compressed without modification...

 Forum: DCMTK - General   Topic: JPEG Lossless compression with bit-depth=12 possible?

Posted: Sat, 2017-08-12, 16:22 

Replies: 3
Views: 328


Or let me pose the question differently: Talking about Decompression of an unsigned JPEG Lossless (.70 Syntax) compressed DICOM Image with BitsAllocated=16, BitsStored=12, HB=11, PI=MONOCHROME. Does it matter for the choice of the correct Decompressor whether the image was compressed considering the...

 Forum: DCMTK - General   Topic: JPEG Lossless compression with bit-depth=12 possible?

Posted: Tue, 2017-08-08, 11:17 

Replies: 3
Views: 328


Hello DCMTK Users, I have a question regarding dcmcjpeg. I would like to know if and how it is possible to compress a DICOM image (with: BitsAllocated=16, BitsStored=12, HighBit=11, PixelRepresentation=0, TS= Explicit Little Endian, PI=MONOCHROME2) to JPEG Lossless SV1 (TS: 1.2.840.10008.1.2.4.70) u...
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