New features(Export annotations in RLE, Visualize semantic segmentation ...)

[Chaimaa-Louahabi]

1. Allow the user to choose the simplification degree for polygon and brush tools (if equal to 0, the original mask is saved and no simplification is done) (Issue Brush Annotation changes when becoming polygon in Tiny Object Annotation #388 )

Brush Panel:

Polygon Panel:

2. Eraser Tool optimization : does not substract current eraser path from annotation path until mouse up event is catched.(solution inspired from optimize BrushTool #364 )

3. Masks created with brush Tool have Bézier curves to allow annotating objects with curves accurately. These annotations are exported in Compressed RLE format.

4. New feature : download an Image’s semantic segmentation in PNG format.

The new button in annottaor vue:

Example of fire and clouds annotations (Annotations were created manually with brush tool):

5. New feature : download a zip containing the semantic segmentation of each image of the dataset.

The zip can be found in "Exports", it has the tag "SemanticSeg"

6. BugFix : when importing annotations that are lines or points, they disappear when one clicks on the image. It's due to a bug in boolean operations algorithm used in Paperjs Open Issue (unite, substract ..) so these 2 cases must be handled separately.

[jsbroks]

Once these merge conflicts are solved Ill merge this

[ariefwijaya]

Once these merge conflicts are solved Ill merge this

@jsbroks any update?