DICOM @ OFFIS

hi, dcmtk team: i want to save several jpeg files into one single multiframe dicom file, so each frame stores one jpeg file.. i don't want to decode the jpeg and put data then encode it... should i use pixelsequence like this? DcmPixelSequence *sequence = new DcmPixelSequence(DcmTag(DCM_PixelData, E...

thank you sir, but what i mean is, sometimes, i don't know about the details of the dicom file i was going to send... so i don't know how to set those parameters. if i know before hand that, the dicom file was compressed with jpeg lossless, i then can choose proper option.. but most of time, i don't...

there are many tags from dicom standard that not in the dcmtk source code. last time, thanks to Mr. Michael Onken, who used dicomcheck to check the dicom file i generated, found there are a lot of tags i didn't set in. including the following: DCM_CurveNumber DCM_CurveDimensions DCM_NumberOfPoints D...

hi, dcmtk experts: why StoreSCU cann't send 8 bit grayscale dicom file with JPEG lossless compression? i tried with storescu send non-compression dicom file, just fine, but when i send the 8 bit grayscale dicom file with JPEG lossless compression, it wouldn't do: I: checking input files ... I: Reque...

yes, jorg.

i understand now, what Sante Viewer did is just a kind of post-converting displaying effect. not really important and not a DICOM implement.

thank you for clarifying for me.

winston.

Thank you very much, jorg..

have a nice weekend.

winston.

thank you, jorg.. Btw, a 24-bit RGB image converted to grayscale results in 8 bits per pixel (max. 256 shades of gray). Why do you want to apply windowing to such an image? you meant: when i use di->CreateMonochromeImage() it's actually became a 8 bit gray image? oh.. then, that's not what i want. w...

thank you, jorg. maybe you meant, from a dicom file converting to a grayscale 8 bit BMP? yes, i know this option but, what i am trying to do is the reverse, converting a 8 bit grayscale BMP to a dicom file, img2dcm refused.. i have to load the data from bmp, and create a dicom from raw data..and suc...

even if i convert the DicomImage to monochrome one, i still can not use window leveling, if the original dicom file is 24 bit RGB dicom. DicomImage *di = new DicomImage(...) DicomImage *image = di->CreateMonochromeImage(...) delete di; di = image; di->setWindow(wCenter,wWidth); di->createWindowsDIB(...

i don't know whether it's DCMTK not support windows leveling on RGB color dicom or, the dicom standard says that. since i found Sante DICOM viewer can adjust window center/width when displaying RGB color image.


can you give me some explanation...

thanks a lot..

winston

hi, Jorg thank you for answering my question. but, today, i found using Sante DICOM Viewer, it can adjust window center/width even to RGB color dicom file.. why is it so? really.. i read several post here, and also you said. window leveling only works for monochrom dicom.. but i save a 24 bit RGB co...

thank you, sir.

by "no real graylevel BMP " in dicom, you mean, the LUT is linear, so the image displayed is gray, "there is always color involved", refers to LUT?

thank you very much.

winston.

hi, dcmtk team: i found img2dcm tool can not use to convert graylevel BMP image to DCM, right? i tried today, it shows failure: img2dcm -i BMP -d gray8bit.bmp dcmfromgraybmp.dcm and i get: (with -debug chosen) D: I2DBmpSource: Plugin instantiated I: img2dcm: Instantiated input plugin: BMP D: I2DOutp...

yes, sir. now i understand, and can set it so the outcome image has different display effect. i have another post, could you look it for me. that is, i have this GE ultrasound dicom file, i can measure distance in millimeter, but don't have pixelspacing tag.. how that can be? the thing is, i set thi...

throught experienment, i found there is no center/width changeable in RGB dicom file.. it only works in 8 bits graylevel dicom image.. even i created than the same way

it's that so? SetWindow(center, width) doesn't work for 24bit dicom image?


thank you very much.

winston