desertEagledev/hcaptcha-manual-sprites

hcaptcha manual sprites

The cut out sprites of the hCaptcha "count the animals" family. Every sprite is a single animal drawn on a transparent background, the name of the file is the hash of the artwork, so the same animal always has the same name.

The labels were put in by hand, by reading the montage pages. The animal of the "cat" class was merged into the "dog" class because both labels were the same animal, and the strip sprites of the boards that were captured later were added after that.

Files:

• sprites/*.png the pictures, the alpha channel marks the animal
• manual_labels.json the name of the file without the extension and the species
• manifest.json the same list with the paths inside the repository

The model that is trained on this set is the small cnn in the solver (core/species.py), it takes the picture of an animal on the white card of the grid or on the beige card of the strip and names the species. The strip sprite and the tile of the same animal are never the same picture, they differ in the palette and often in the pose, so the pairing is done by the name of the class and never by the picture.