“The Caltech-UCSD Birds-200-2011 Dataset”, Catherine Wah, Steve Branson, Peter Welinder, Pietro Perona, Serge Belongie2011-07-29 (; backlinks; similar)⁠:

CUB-200-2011 is an extended version of CUB-200, a challenging dataset of 200 bird species. The extended version roughly doubles the number of images per category and adds new part localization annotations. Images and annotations were filtered by multiple users of Amazon Mechanical Turk.

All images are annotated with bounding boxes, part locations, and attribute labels.

We introduce benchmarks and baseline experiments for multi-class categorization and part localization.

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The Caltech-UCSD Birds-200-2011 Dataset