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Unsupervised Patch-based Context from Millions of Images

Santosh Kumar Divvala, Alexei A. Efros, Martial Hebert and Svetlana Lazebnik
Tech. Report, CMU-RI-TR-11-38, Robotics Institute, Carnegie Mellon University, December, 2011

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The amount of labeled training data required for image interpretation tasks is a major drawback of current methods. How can we use the gigantic collection of unlabeled images available on the web to aid these tasks? In this paper, we present a simple approach based on the notion of patch-based context to extract useful priors for regions within a query image from a large collection of (6 million) unlabeled images. This contextual prior over image classes acts as a non-redundant complimentary source of knowledge that helps in disambiguating the confusions within the predictions of local region-level features. We demonstrate our approach on the challenging tasks of region classification and surface layout estimation.

BibTeX Reference
title = {Unsupervised Patch-based Context from Millions of Images},
author = {Santosh Kumar Divvala and Alexei A. Efros and Martial Hebert and Svetlana Lazebnik},
school = {Robotics Institute , Carnegie Mellon University},
month = {December},
year = {2011},
number = {CMU-RI-TR-11-38},
address = {Pittsburgh, PA},