DetectCirclesJ does not seem to do anything

[ctrueden]

The following macro creates a small black image with a white circle, then runs DetectCirclesJ on it:

newImage("Untitled", "RGB black", 64, 64, 1);
makeOval(16, 18, 35, 35);
setForegroundColor(255, 255, 255);
run("Fill", "slice");
run("Select None");
run("DetectCirclesJ ");

The ROI Manager appears, but no ROIs are within it.

[joheras]

This is probably related to the problem of the blackhat plugin since the bridge between ImageJ and OpenCV only works with RGB images. Besides, OpenCV's Hough circles algorithm employed to detect circles has several parameters that must be configured to work properly; so, I will modify the plugin to allow the user to have more control about the parameters of the Hough circle algorithm. 2017-03-14 16:13 GMT+01:00 Curtis Rueden <notifications@github.com>:

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The following macro creates a small black image with a white circle, then runs DetectCirclesJ on it: newImage("Untitled", "RGB black", 64, 64, 1);makeOval(16, 18, 35, 35);setForegroundColor(255, 255, 255);run("Fill", "slice");run("Select None");run("DetectCirclesJ "); The ROI Manager appears, but no ROIs are within it. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#4>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFMQGzsg_-6yJPSEmMWFETZ8qlbW4sfoks5rlq6igaJpZM4MctwR> .