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Simple directional gradients

Beare, Richard
Monash University
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Published in The Insight Journal - 2011 January-June.
Submitted by Richard Beare on 2011-05-19 07:54:17.

It is often useful to be able to compute the component of image gradient in a direction defined by a shape of some form, rather than relative to the image axis. This article introduces a simple method for doing this based on distance transforms that is potentially useful in a number of applications.