Unsupported Transfer Syntax Error for Lossy JPEG 8 Bit Image Compression in fo-dicom on .NET 7.0

[jamesnet214]

Certainly! Here's a more detailed bug report:

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Describe the bug
When trying to convert a DICOM image to bitmap using the fo-dicom library, I encounter an error stating "Decoding dataset with transfer syntax: JPEG Baseline (Process 1): Default Transfer Syntax for Lossy JPEG 8 Bit Image Compression is not supported." This issue does not appear when using the externally provided dicom.Core.dll for .NET Framework 4.81.

To Reproduce

1. Clone the repository: https://github.com/jamesnet214/issue
2. Navigate to the DicomTestViewer project.
3. Run the application and try to load the DICOM file from the specified location.
4. Observe the error on line 108 in Class1.cs when calling the image.AsSharpImage(); method.

Expected behavior
The DICOM image should be successfully converted to a bitmap without any codec errors.

Screenshots or test DICOM files
The error screenshot can be viewed here:

Code for reference:
https://github.com/jamesnet214/issue/blob/main/dotnet/dicom/DicomTestViewer/JamesCoreViewer/Class1.cs

Test DICOM file:
https://github.com/jamesnet214/issue/blob/main/dotnet/dicom/DicomTestViewer/JamesCoreViewer/Data/studylist/A2C/1.dcm

Additional context
The functionality works as expected when using dicom.Core.dll for .NET Framework 4.81, suggesting there might be a compatibility or implementation issue with the fo-dicom library in .NET 7.0.

Environment

• Fellow Oak DICOM version: 5.1.1
• OS: Windows 11
• Platform: .NET 7.0

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I hope this expanded description helps. If there's anything else you'd like to add or if you have further questions, please let me know!

[cocosip]

You are missing the injection of NativeTranscoderManager

... 
services
    .AddFellowOakDicom()
    .AddTranscoderManager<NativeTranscoderManager>()
    .AddImageManager<ImageSharpImageManager>();

[amoerie]

Looks like ChatGPT didn't realize those were needed. 🙃