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Multi-Image Matching using Multi-Scale Oriented Patches

Matthew Brown, Simon Winder, and Richard Szeliski

Abstract

This paper describes a novel multi-view matching framework based on a new type of invariant feature. Our features are located at Harris corners in discrete scale-space and oriented using a blurred local gradient. This defines a rotationally invariant frame in which we sample a feature descriptor, which consists of an 8 × 8 patch of bias/gain normalised intensity values. The density of features in the image is controlled using a novel adaptive non-maximal suppression algorithm, which gives a better spatial distribution of features than previous approaches. Matching is achieved using a fast nearest neighbour algorithm that indexes features based on their low frequency Haar wavelet coefficients. We also introduce a novel outlier rejection procedure that verifies a pairwise feature match based on a background distribution of incorrect feature matches. Feature matches are refined using RANSAC and used in an automatic 2D panorama stitcher that has been extensively

tested on hundreds of sample inputs.

Details

Publication typeInproceedings
Published inIEEE Computer Society Conf. on Computer Vision and Pattern Recognition
Pages510-517
VolumeI
PublisherIEEE Computer Society

Previous versions

Matthew Brown, Richard Szeliski, and Simon Winder. Multi-Scale Oriented Patches, December 2004.

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