How to Change Background of the Mask to be Black?

[sarmientoj24]

Expected Behaviour

I'd like to change the background mask to be black when exported.

Current Behaviour

Default mask is not black

[zhiltsov-max]

You can call the background class background or remove any labels called background.

[sarmientoj24]

DO i have to create another class to be background? Say I have five classes, do I need to make it 6 then have the last one as black?

[zhiltsov-max]

You can either create a background class and draw it, or don't create it and all the unannotated space will be black. Did you have any problems with obtaining black background?

[sarmientoj24]

all unannotated space is brown

[zhiltsov-max]

Can you update to the latest version and check?

[zhiltsov-max]

You can also change colors on existing png masks using Datumaro (example #1670):

1. datum project import --format voc --input-path <path/to/voc/dataset>

2. Create a color map file with desired colors:

# label : color_rgb : parts : actions
background:0,0,0::
cat:0,0,255::
dog:255,0,0::

3. datum project export --format voc_segmentation -- --label-map mycolormap.txt

[bsekachev]

@sarmientoj24 No answer for a month here. I will close the issue. Do not hesitate reopen it if you still need help