@inproceedings{inproceedingse8181d7c,
title   = {A pyramid of concentric circular regions to improve rotation invariance in bag-of-words approach for object categorization},
author = {Lara, Arnaldo Câmara and Hirata Júnior, Roberto},
year = {2013},
doi = {10.5220/0004298806870692},
publisher = {SciTePress},
booktitle   = {International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - VISIGRAPP}
}