[Hans] [Annotation] Segmentation overlay support

[curtislisle]

If a label volume is listed as corresponding to a source image, can the viewers load a segmentation overlay in addition to the source image?

This was mentioned by Hans and would help the annotation application as well.

Don't know how difficult this would be.

Hans mentioned it would be cool, if we could specify views through a mini-algebraic language (similar to what ANTS does), where a view could be defined as a blend between foreground, background image, and label image: F:[.5] B:[.2] L:[.3] . Having dynamic viewing parameters like this avoids creating temporary files where the content has been "burned into" a single image.