Not working on other Dicoms

[ihammys]

Hi,
It is not working on Dicoms other than those which are provided in examples. Is there any specific build settings required to convert it into UIImage?

[russes]

If you look at the sample code, it looks as if the Dicom image is rewritten as a JPEG file.
For your image, has the rewritten JPEG file been created at all?

Note: I have not used ashtons Dicom code. I have a newer version of Dicom that uses the Calgary Informatics Objective-C library to sugarcoat Dicom for an Apple developer.

[ihammys]

Hi, thank you for your response. No, image wasn't created for Dicoms with photometric interpretations, monochrome and ybr_full but yes generating image for RGB interpretations.

[ihammys]

From where I can get the Calgary Informatics Objective-C?

[russes]

First, start here: #8

At the bottom of that issue, you'll see a link to find my copy of DCMTK. You should be able to use CMake to create a build tree that will build in Xcode.

Once you have that, this copy of iiDicom (the Calgary code, modified for iOS & Mac) is available here:

https://russes@bitbucket.org/afabsoftware/iidicom.public.git

That version of iiDicom should build for both platforms. The code should build for UIImage and NSImage, depending on Mac or iOS. I believe the color management should be fixed for both platforms.

NOTE: The code for reading tags is very rough & is not part of the original Calgary sources. Use at your own risk.

If you modify something, send the changes back.

As an example, you might be able to get at an image slice like this:

self.slice = [[iiDcmSlice alloc] initWithDicomFileSlice: url.path];
iiDcmDictionary *dicomDictionary = [[iiDcmDictionary alloc] initWithDicomFile: url.path];
NSDictionary  *dataSet = [dicomDictionary metaDataSet];

             CGImageRef  xy = [slice sliceAsCGImageRef: YES];          // must release via a subroutine call
                UIImage *cc = [[UIImage alloc] initWithCGImage: xy];
              CGImageRelease (xy);

One more thing: You'll need to set DCMDICTPATH on application startup:

      NSString *resourcePath = [[NSBundle mainBundle] pathForResource: @"dicom" ofType: @"dic"];         // assume this in the bundle (read only)
    const char     *filepath = resourcePath.UTF8String;
    
    setenv ("DCMDICTPATH", filepath, 1);

[ihammys]

Hi,

Is there any licensing required to use it?

[ihammys]

Hi, I have built latest_dcmtk.iOS but not sure where to import it, could you please guide, apologies

[russes]

Use the "afab" branch for all all builds.

Build DCMTK first, as a standalone project. Be sure to run the "ALL_BUILD" & "install" schemes, in that order. "install" will build an installation tree called "install" in your build tree. The install area will have osconfig.h that iiDicom can use.

I made one change to the Xcode project for iiDicom. That change sets the build version of iiDicom to iOS 10.3. You can do this manually if you want.

When I build DCMTK and "install" it, the iiDicom build should work. If you get version mismatch warnings with the iiDicom build, set the version in iiDicom.xcodeproj to 10.3.

Unfortunately, when you're auto-generating multiple platform builds, sometimes the builds can be "brittle."

[ihammys]

Hi.

There must be some frameworks/libraries required.

[russes]

You will need to make sure that Xcode includes the appropriate libraries. IIDicom will need to have the appropriate libraries setup in the project. You'll also need to make sure the appropriate include settings are set within your code.

This should build. I downloaded the same files you are working from. Everything worked.

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