Get data from DcmDataset and put it in a buffer

[wassio]

Hi,

I made a program that décommresse a Dicom- JPEG lossless.

What I want now is to retrieve only data after decompression from DcmDataset and put it in a buffer.

I did not know how to do it

Waitting for your help and thank you in advance

[Jörg Riesmeier]

Do you want to access the uncompressed pixel data?

[wassio]

thank you for

I want to recover the uncompressed data and put it in a buffer.

I don't want to save the uncompressed dicom file using methode

Code: Select all

 fileformat.saveFile(opt_ofname, opt_oxfer, opt_oenctype, opt_oglenc,opt_opadenc, (Uint32) opt_filepad, (Uint32)opt_itempad,opt_oDataset);

What I want now is to retrieve only data after decompression from DcmDataset or DcmFileFormat and put it in a buffer.

using

memcopy(......)

Thank you in advance

[Jörg Riesmeier]

I'm sorry but I'm still not quite sure what you intend to do ...

[wassio]

i want to retrieve the pixel data of the dicom file.

[Jörg Riesmeier]

This is what I was asking in my first reply ...

Depending on the data type of the PixelData element (OB or OW), you could use findAndGetUint8Array() or findAndGet16Array() after calling chooseRepresentation() to decompress the pixel data. This gives you access to the uncompressed (raw) pixel data. If the purpose of accessing the pixel data is image visualization, you should have a closer look to the DicomImage class.

[wassio]

Thank you for your help
How to get the data type of the PixelData element ?

[Jörg Riesmeier]

Did you already try getVR()?