Edge detection: Difference between revisions

Revision as of 15:33, 15 November 2005

Revision as of 15:43, 15 November 2005

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== Detecting an edge ==

Taking an edge to be a change in intensity taking place over a number of pixels, edge detection algorithms generally calculate a derivative of this intensity change. To simplify matters, we can consider the detection of an edge in 1 dimension. In this instance, our data can be a single line of pixel intensities. For instance, an edgewe can clearlyintuitively say that there should be detectedan edge between the 4th and 5th pixels in the following 1-dimensional data:

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