Adding to ROI Manager by Color?

Posted by Matt TLAB on Mar 17, 2010; 3:44pm
URL: http://imagej.273.s1.nabble.com/Adding-to-ROI-Manager-by-Color-tp3688941.html

Hi,
I am trying to automate area measurements of two separated items in a file.  By hand I can add each item to the ROI manager and calculate the area of each from there.  I have thresholded the images so that the two items are white against a black background.  Is there a way for ImageJ to add items to the ROI manager through color selection?  I suppose I could crop the images enough so that the items are always in about the same place.  That way the pixel placement of the magic wand selection would be in the same place for each image (I'm trying to automate by writing a macro that I can use as a batch processor).  Are there any ways to add items to the ROI manager without actually using the magic wand to click on them?  Maybe by color?  Or minimum size?




Thanks,
Matt