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====== Edge Detection ======

**Edge Detection by Canny-Deriche filtering**

===== Description =====

This plugin performs a Canny-Deriche filtering for edge detection. A parameter controls the degree of smoothing applied; the default value is 1.0, greater values imply less smoothing but more accurate detection, lower values imply more smoothing but less accurate detection. A non-maximal suppression is then performed to get thin edges. The angle of the edges can also be displayed. 


A double thresholding by hysteresis is also included but can be found separately [[:plugin:segmentation:hysteresis_thresholding:start|here]].

It has been written originaly by Thomas Boudier and then repackaged by Joris Meys.

Download {{:plugin:filter:edge_detection:image_edge.jar|}} to your plugins directory and then restart ImageJ or use the Update Menus command.

The source code is also available : {{:plugin:filter:edge_detection:imageedgesrc.jar|}} (rename as .zip to unzip it).

{{:plugin:filter:edge_detection:org.jpeg?300x200|Boats original image}} {{:plugin:filter:edge_detection:canny-deriche.jpeg?300x200|Boats gradient image}}

Contact me for any questions or suggestions : {{:plugin:filter:edge_detection:email.png|}} or jorismeys at gmail dot com.
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