MPEG-7 Core Experiment CE-Shape-1 Test Set. Benchmarking image database for shape recognition techniques

This image database is commonly used for benchmarking shape matching algorithms and includes binary images grouped into categories by their content, not their appearance or shape. In this way there are categories like car or bird, which include images corresponding to the same concept, but showing noticeable different shapes. There are 1400 images, divided into 70 categories, and each category includes 20 samples. Shapes include variations in the rotation, size and position, and even the image resolution is not constant. Some images have holes in them, while others do not. This database has been obtained from and This database is also hosted here.