Search found 7 matches

by nalexander
Wed, 2008-03-26, 17:31
Forum: DICOMscope - General
Topic: marking a non-rectangular region of interest on an image
Replies: 2
Views: 9507

Ah. Thank you for the reply. Is there any software out there that I could use to create overlays like this (ie non-rectangular, and stored as overlay data, not integrated with pixel data in the image)? Or is this perhaps only something radiologists/technicians/doctors can do with proprietary hospita...
by nalexander
Tue, 2008-03-25, 17:20
Forum: DCMTK - General
Topic: quick question re. calling findAndGetSint16Array
Replies: 7
Views: 7470

Ahh, I see. Thank you. If I need the pixel data for segmentation purposes (so initially for making histograms of different regions in the image), is this (findAndGet....) the correct way to obtain pixel values? Or should I be using intermediate values of the pixels? And, Normand, is this correct for...
by nalexander
Tue, 2008-03-25, 16:33
Forum: DICOMscope - General
Topic: marking a non-rectangular region of interest on an image
Replies: 2
Views: 9507

marking a non-rectangular region of interest on an image

Hi, I'm just wondering if anyone here could help me with this (should-be) simple task: I need to outline (fill) the region representing bone tissue in a (single frame) 2D CT image. My understanding is that I can do this in DICOMscope, and have the markings stored as an overlay. Am I right? I tried t...
by nalexander
Tue, 2008-03-25, 15:50
Forum: DCMTK - General
Topic: quick question re. calling findAndGetSint16Array
Replies: 7
Views: 7470

Ah, thank you for that bit of code. I'm not getting the error any more! I will probably post questions as I run into more problems soon :p

As for the 17 bits/sample, that is not what I expect. It is what getDepth (from DicomImage) tells me the depth is.. That is what's confusing me.

Thanks again.
by nalexander
Tue, 2008-03-25, 14:40
Forum: DCMTK - General
Topic: quick question re. calling findAndGetSint16Array
Replies: 7
Views: 7470

Thanks for responding. Does everything else look okay to you (specifically the number of elements, 262144)? I'm a novice, so I'm not sure how to interpret/handle signed numbers read as unsigned. (And I'm additionally confused by the fact that my image depth is supposedly 17 bits/sample -- I figured ...
by nalexander
Tue, 2008-03-25, 14:30
Forum: DCMTK - General
Topic: DCMTK documentation
Replies: 4
Views: 4803

Hi and thank you for the sample code you posted a link to - it helped get me started. I'm just wondering if you got around to posting any more code.. I'm specifically getting stuck in reading pixel data. Sample code would help me a great deal.
Thanks in advance.
by nalexander
Tue, 2008-03-25, 13:53
Forum: DCMTK - General
Topic: quick question re. calling findAndGetSint16Array
Replies: 7
Views: 7470

quick question re. calling findAndGetSint16Array

Hi, I'm just wondering if anyone can help me write the correct parameters in the call to findAndGetSint16Array below. I get an error reading pixel data: "Illegal call, perhaps wrong parameters". I'm also pretty sure the number of elements in the buffer shouldn't be 262144 (which I chose because the ...