How important are "Deformable Parts" in the Deformable Parts Model?

Santosh Kumar Divvala, Alexei A. Efros, and Martial Hebert
Workshop on Parts and Attributes, in conjunction with ECCV2012, October, 2012.


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Abstract
The Deformable Parts Model (DPM) has recently emerged as a very useful and popular tool for tackling the intra-category diversity problem in object detection. In this paper, we summarize the key insights from our empirical analysis of the important elements constituting this detector. More specifically, we study the relationship between the role of deformable parts and the mixture model components within this detector, and understand their relative importance. First, we find that by increasing the number of components, and switching the initialization step from their aspect-ratio, left-right flipping heuristics to appearance-based clustering, considerable improvement in performance is obtained. But more intriguingly, we observed that with these new components, the part deformations can now be turned off, yet obtaining results that are almost on par with the original DPM detector.

Notes

Text Reference
Santosh Kumar Divvala, Alexei A. Efros, and Martial Hebert, "How important are "Deformable Parts" in the Deformable Parts Model?," Workshop on Parts and Attributes, in conjunction with ECCV2012, October, 2012.

BibTeX Reference
@inproceedings{Divvala_2012_7256,
   author = "Santosh Kumar Divvala and Alexei A. Efros and Martial Hebert",
   title = "How important are "Deformable Parts" in the Deformable Parts Model?",
   booktitle = "Workshop on Parts and Attributes, in conjunction with ECCV2012",
   month = "October",
   year = "2012",
}