Using Enlarge function with very large ROI sets

[Jerry Lin]

Dear experts,

I'm trying to quantify timelapse images with nuclear fluorescent marker for segmentation and also take cytoplasmic measurements by enlarging ROIs.  However, because of very large ROI sets (>50,000), my macro ran very slow.

counts=roiManager("count");
for(i=0; i<counts; i++) {
    roiManager("Select", i);
    run("Measure");
    run("Enlarge...", "enlarge=4");
    run("Measure");
}

I've already setBatchMode("true").  It helps a little (save about half time),  but I was wondering if there is a way to speed up my macro.

Thanks,
Jerry