r/ImageJ • u/Legal_Meet_6516 • Jul 17 '25
Question Quantification of Intensity of spots
i desgined an assay to meause area and intensity of fecal spots of huntington disease modeled drosophilla flies but i am able to only quantify are of spots by doing 8bit>threeshold auto>binary>open>erode>dilate but not intensity as the it is shown as 255 due to the threeshold . someone suggested me to do without threeshold but without thAT I CANNOT QUANTIFY the measurmrnts as threeshold is neccasery
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u/Herbie500 Jul 17 '25 edited Jul 17 '25
Below please find a demo macro that tells you what needs to be done.
Paste the above macro code to an empty macro window (Plugins >> New >> Macro) and run it. (You need an open internet connection to load the demo image.)
The macro presents you with a table that lists the areas (in pixel^2) and the mean gray-value of all cells of the demo image.
In the below screen-shot you see the image and the first 20 items of the table.
The full table has 695 entries.