Image Segmentation/Brush Tool does not work as expected, Scissor/Multiple brush-strokes

[tristanratz]

Describe the bug

The scissortool in brush segmentation does not erase the whole brush stroke but only makes it lighter. The opacity of the stroke gets reduced.

Furthermore another brushstroke/scissorstroke can only be started from an area where I never have drawn with the scissortool or a brush. One has always to drag/start the tools outside of the "used" areas to work.

To Reproduce

1. Create a config.xml which uses the brush image segmentation
2. Draw a brushstroke
3. Try to erase the drawn area or to draw a new stroke in the used area - it will not work

Expected behavior

It should be possible to start new brush-/scissorstrokes from anywhere inside the picture. Furthermore the scissortool should erase the brushes to zero opacity.

Screenshots

After erasing with scissor (still fragments of the brushtool):

Environment (please complete the following information):

• OS: any
• Label Studio Version [0.8.0]

[makseq]

Thank you for your report, we've created a ticket about this bug.

[davidblom603]

Noticed this problem too.

[faizan170]

Same issue, any update?

[tcapelle]

Did you manage to make it work?
I have a somewhat related issue, the pixel output should be solid (not different opacity levels). For each label, one gray value. I get soft borders. Maybe it is related.

Here values should be either 128 or 192, but not in-between.

[makseq]

@faizan170 We are working on it.

@tcapelle Why can't you apply a simple thresholding to this array? For example:

img[img > 0] = 1
mask = img.astype(np.bool)

[tcapelle]

Thanks you for looking at this, i am doing this right now, but it is far from optimal.

• The brush should be hard, and paint (segment) only the given value.
• Have not been able to find where to set this value. (e.g. Label Plane - > 128 value on mask, for instance.)

[nicholasrq]

This issue was fixed and available since LS 1.0.1