//MASK

epsilon=0.01;

IJ.run("Rename...", "title=X");
IJ.run("Duplicate...", "title=ORIGINAL duplicate");
IJ.selectWindow("X");




stack = ImagePlus.getStack(); // grab stack
for (var s=1; s<=stack.getSize(); s++)
{
IJ.write( s);
pixels = stack.getPixels(s); // grab pixel array
for (var i = 0; i < pixels.length; i++)
{
p = pixels[i];
if (p<epsilon) {p=0.0;} else {p=1.0;}
pixels[i] = p;
}
}