Hi José,
when you save a multilabel segmentation from MITK, make sure to select the MITK Multilabel Image writer. This is the default file writer when you right-click on a multilabel segmentation and chose Save as... The segmentation is then saved as a NRRD file with additional header data and an additional image dimension that maps to the layer feature of our multilabel segmentation images. Loading such images in MITK should automatically default to the corresponding file reader as all file readers are asked if they can read this file and the multilabel image file reader will report back that it can and it also reports a higher confidence level then the plain NRRD reader. Loading other file formats directly as multilabel segmentation out-of-the-box is not possible to my knowledge. Classic segmentations / binary images were read as their actual file type but after loading MITK checked pixel by pixel if there were only two different pixel values and then marked the image as binary image which boils down to a single property that can be checked/unchecked by a user in the Properties View, too. If you saved your images as MITK Multilabel Image and they are still read in as plain NRRD images in your application, please check if the Multilabel Image reader is available (for example by placing a break point in its CanRead() method. If it is available but not selected for some other reason by the mitk::IOUtil::Load() method, it also has an overloaded signature where you can enforce a certain file reader as far as I know. If you have another file format and writing a preprocessing/converter app for your files is not an option, you can consider to write your own file reader, deriving from the file reader that is currently chosen by MITK and implement a little business logic to decide if your file reader should have precedence and then assemble an mitk::LabelSetImage directly. You can look into the Multilabel Image file reader for inspiration. Best, Stefan ________________________________ Von: José Alonso Solís Lemus <alonso.jasl+...@gmail.com> Gesendet: Montag, 23. Mai 2022 13:59 An: mitk-users@lists.sourceforge.net Betreff: [mitk-users] MITK load multilabel segmentation programmatically Hello, My group has an application built as an MITK_EXTENSION (www.cemrg.com<http://www.cemrg.com>). When I load a mulilabel segmentation from MITK, it shows as a grayscale image. If I want to edit the tags, I need to right click on the multilabel segmentation and click on Convert to segmentation. I would like to load it programmatically, and have it be recognised automatically as a multilabel segmentation. Is there a way to do this? Normally, with single label segmentation, MITK is able to recognise it automatically, but I have not found how to do it for multilabel segmentations. Any help would be greatly appreciated. Best, José
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