A novel bag-of-visual-words approach for geospatial object detection

Çaglar Aytekin; A. Aydin Alatan

doi:10.1117/12.883801

26 April 2011 A novel bag-of-visual-words approach for geospatial object detection

Çaglar Aytekin, A. Aydin Alatan

Proceedings Volume 8055, Optical Pattern Recognition XXII; 80550O (2011) https://doi.org/10.1117/12.883801
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

A novel bag-of-visual-words algorithm is presented with two extensions compared to its classical version: exploiting scale information and weighting visual words. The scale information that is already extracted with SIFT detector is included as an additional element to the SIFT key-point descriptor, while the visual words are weighted during histogram assignment proportional to their importance which is measured by the ratio of their occurrences in the object to the occurrences in the background. The algorithm is tested for different geo-spatial object classes and the performance of the classical bag-of-visual-words algorithm is compared against the classical approach. Based on these results, a significant improvement is observed in terms of detection performance.

Citation Download Citation

Çaglar Aytekin and A. Aydin Alatan "A novel bag-of-visual-words approach for geospatial object detection", Proc. SPIE 8055, Optical Pattern Recognition XXII, 80550O (26 April 2011); https://doi.org/10.1117/12.883801

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