Machine Learning Meetings and Events
Group Meetings: Group meetings are held Mondays from 11am to Noon (talk starts 11:10am) in D.L. Pratt 290C unless otherwise noted. Meetings are coordinated by Hugo Larochelle.
Tea Talks: Tea talks are held every Wednesday at 4:00pm in D.L. Pratt 290C. Talks should be simple, accessible, and not exceed 15 minutes. Speakers bring snacks, make tea, and provide a copy of the presented paper.
Tea Talk Jan 14, 2009: Histograms of Oriented Gradients for Human Detection by Dalal and Triggs.
- Speaker: Jasper Snoek
- Link: http://lear.inrialpes.fr/people/triggs/pubs/Dalal-cvpr05.pdf
- Abstract: These days in my research I'm revisiting the problem of human detection in images and video. So the paper I'll be talking about is Histograms of Oriented Gradients for Human Detection by Dalal and Triggs. The main contribution of the paper is a heuristic method for creating a feature vector representation of an image patch as a histogram of the orientation of gradients within the patch. While the technique is not theoretically well justified and involves no learning of features, it does impressively well when applied to a simple SVM classifier for the problem of human detection. In fact, when it came out in CVPR '05, it did so well that the standard human detection dataset didn't give it enough of a challenge so they had to create a new one! This should be of interest to anyone doing object detection/classification in images. You can find the paper at http://lear.inrialpes.fr/people/triggs/pubs/Dalal-cvpr05.pdf. There will be cookies!