https://imagejdocu.list.lu/ 2026-08-25T23:43:57+00:00 https://imagejdocu.list.lu/ https://imagejdocu.list.lu/lib/tpl/dokuwiki/images/favicon.ico text/html 2019-04-12T13:13:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://imagejdocu.list.lu/plugin/filter/edge_detection/start?rev=1555067621&do=diff 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.