Change Details

- Please describe the bug or feature request as long as necessary but as short as possible. - What information is necessary to reproduce the bug? For example, what version of MITK do you use, what is your operating system? - Unless you are sure about the priority, `Needs Triage` is perfectly fine. - As an external reporter, please do **not** change `Needs Triage`. Otherwise the task may drown in the daily task noise, while the list of `Needs Triage` tasks is guaranteed to be reviewed regularly. - Do not assign the task to someone else. Instead, consider adding other users as subscribers or explicitly mention them with the @ syntax. - If you have a GitHub pull request, please add the #pull_request tag below.

When viewing segmentation maps it is essential to display each unique label in a different (unique) color. The usual workflow to achieve that is to select the 'multilabel' color map for the segmentation. I don't know what MITK does exactly under the hood to set the level window (which seems to be what controls the color assignments). It appears to not use the whole image. This can cause some labels to not be captures and consequently not to be displayed in a unique color. **Reproduce** (use data from here: e132-projekte/Share/FabianAnMITKTeam/T28421) : load the image (Patient_01_0000.nii.gz) and its segmentation (Patient_01.nii.gz). Make the segmentation the top entry in the data manager so that it is displayed on top of the image. Then change colormap of segmentation to multilabel. Navigate up to the jaw of the patient. The jaw should be segmented in two parts: the left and the right (pixel values 21 and 22). Unfortunately these are not displayed in different colors. Both are yellow: {F2189856} This can be fixed manually by selecting the 'use whole image value' option when right clicking the level window slider: {F2189860} We should not expect users to do this every time. This should be done automatically whenever the multicolor label map is selected (I think it even used to be like that) **Fix** Automatically run 'use whole image value' whenever multilabel color map is selected

- Please describe the bug or feature request as long as necessary but as short as possibleWhen viewing segmentation maps it is essential to display each unique label in a different (unique) color. The usual workflow to achieve that is to select the 'multilabel' color map for the segmentation. - What information is necessary to reproduce the bug?I don't know what MITK does exactly under the hood to set the level window (which seems to be what controls the color assignments). For example,It appears to not use the whole image. what version of MITK do you use, what is your operating system?This can cause some labels to not be captures and consequently not to be displayed in a unique color. **Reproduce** (use data from here: e132-projekte/Share/FabianAnMITKTeam/T28421) : - Unless you are sure about the priority,load the image (Patient_01_0000.nii.gz) and its segmentation (Patient_01.nii.gz). Make the segmentation the top entry in the data manager so that it is displayed on top of the image. Then change colormap of segmentation to multilabel. Navigate up to the jaw of the patient. The jaw should be segmented in two parts: the left and the right (pixel values 21 and 22). Unfortunately these are not displayed in different colors. `Needs Triage` is perfectly fine.Both are yellow: - As an external reporter, please do **not** change `Needs Triage`. Otherwise the task may drown in the daily task noise, while the list of `Needs Triage` tasks is guaranteed to be reviewed regularly.{F2189856} This can be fixed manually by selecting the 'use whole image value' option when right clicking the level window slider: - Do{F2189860} We should not assign the task to someone elseexpect users to do this every time. Instead, consider adding other users as subscribers or explicitly mention them with the @ syntax.This should be done automatically whenever the multicolor label map is selected (I think it even used to be like that) **Fix** Automatically run 'use whole image value' whenever multilabel color map is selected - If you have a GitHub pull request, please add the #pull_request tag below.