Structured Prediction Models for High-level Computer Vision Tasks
- π€ Speaker: Sebastian Nowozin, Microsoft Research
- π Date & Time: Wednesday 28 September 2011, 15:00 - 16:00
- π Venue: Large lecture theatre, Microsoft Research Ltd, 7 J J Thomson Avenue (Off Madingley Road), Cambridge
Abstract
Rich statistical models have revolutionized computer vision research:
graphical models and structured prediction in particular are now commonly used tools to address hard computer vision problems. I discuss what distinguishes these computer vision problems from other machine learning problems and how this poses unique challenges.
I argue that most computer vision models are misspecified and discuss the consequences of popular estimators in this case, concluding that we either have to use non-parametric models or use estimators robust to misspecification.
As one possible solution, I propose a novel discrete random field model applicable to a large number of computer vision tasks. The model is conditionally specified, non-parametric, and able to represent complex label interactions, yet it can be trained from hundreds of images in minutes on a single machine.
Series This talk is part of the Microsoft Research Cambridge, public talks series.
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Sebastian Nowozin, Microsoft Research
Wednesday 28 September 2011, 15:00-16:00