Visualizing Object Detection Features
Author(s)Pirsiavash, Hamed; Malisiewicz, Tomasz; Vondrick, Carl Martin; Khosla, Aditya; Torralba, Antonio
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We introduce algorithms to visualize feature spaces used by object detectors. Our method works by inverting a visual feature back to multiple natural images. We found that these visualizations allow us to analyze object detection systems in new ways and gain new insight into the detector’s failures. For example, when we visualize the features for high scoring false alarms, we discovered that, although they are clearly wrong in image space, they often look deceptively similar to true positives in feature space. This result suggests that many of these false alarms are caused by our choice of feature space, and supports that creating a better learning algorithm or building bigger datasets is unlikely to correct these errors without improving the features. By visualizing feature spaces, we can gain a more intuitive understanding of recognition systems.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
International Journal of Computer Vision
Vondrick, Carl, Aditya Khosla, Hamed Pirsiavash, Tomasz Malisiewicz, and Antonio Torralba. “Visualizing Object Detection Features.” Int J Comput Vis 119, no. 2 (March 1, 2016): 145–158.
Author's final manuscript