With RGB images, the black background is not really well adapted for sending to DeepSlice, but also to export registered images:
A white background could be an option.
Also, when the slice spans an area too small, it's not going to give good results with DeepSlice. Running DeepSlice two times could be a solution. Having a way to automatically detect the slice area and put a warning is also an idea, but making a simple autodetection could be hard...
With RGB images, the black background is not really well adapted for sending to DeepSlice, but also to export registered images:
A white background could be an option.
Also, when the slice spans an area too small, it's not going to give good results with DeepSlice. Running DeepSlice two times could be a solution. Having a way to automatically detect the slice area and put a warning is also an idea, but making a simple autodetection could be hard...
Thanks @PolarBean for noticing!