SKY-Scene and TUB-Scene can be used to train, validate, and test models, whereas Freehand-Scene are collected for model testing.
After unzipping SKY-Scene.zip or TUB-Scene.zip, there are three folders (train, val, and test) and two files (colorMap.mat and colorMap.txt). Under each folder, DRAWING_GT contains the input sketch, while CLASS_GT is the annotated semantic ground-truth. The files colorMap.mat and colorMap.txt record the class-to-color mapping; they contain the same thing but with different format.
After unzipping Freehand-Scene.zip, there is one folder test and two files colorMap.mat and colorMap.txt. Under folder test, DRAWING_GT contains the input sketch, while CLASS_GT is the annotated semantic ground-truth. The files colorMap.mat and colorMap.txt record the class-to-color mapping; they contain the same thing but with different format. This dataset is used for model evaluation.