Local groundtruth In the local groundtruth, every logos 37 differents logos have been surrounded with a rectangular bounding box. A given image can contain several bounding boxes. Download internal and local Qset3 queries Download internal and local Qset3 grountruth top Evaluation Evaluation Metric The primary metric used for the evaluation is the Mean Average Precision over all queries of a given query set Qset1, Qset2 or Qset3. Logos being the most frequent in the dataset see above table are represented by more queries than less frequent ones. The logo illustrations provided in above table are re-sized versions of the 26 thumbnails composing Qset2.
BelgaLogos Dataset Content-based logos and trademarks retrieval in large natural image collections is of high interest for many applications, including dissemination impact evaluation, prohibited or suspicious logos detection, automatic annotation, etc.
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Logos having a bounding box with a minimum value of height and width lower than 10 pixels were not annotated. Queries targeting the same logo have the same root name and a iterative number ex: A given image can contain one or several logos or no logo at all. They are freely available for research purpose only. Logos being the most frequent in the dataset see above table are represented by more queries than less frequent ones.