Adjuct color mapping of the generated mask images

[bessszilard]

Is it possible to create a setting, where we can adjust the color mapping for the generated images?
This would be useful, for the image-segmentation-keras models.

Regards,
Szilard Bessenyei

[nmanovic]

@bessszilard , for now it is not possible. There are several ways to solve the issue. The most obvious is to use opencv to convert images as you like. I will keep the issue open till we have a builtin solution.

[bessszilard]

@nmanovic Okay, thanks for your response!

[nmanovic]

@bessszilard , also you can contribute one more format. Look at https://github.com/opencv/cvat/blob/develop/cvat/apps/annotation/mask.py

You probably just need to change def genearte_pascal_colormap(size=256) and contribute it.

[zhiltsov-max]

While not supported in the UI, you can 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