Spaxe · August 29, 2015 14:05
diff --git a/gistfile1.txt b/gistfile1.txt
 Take original image A, blur it to get image B. Then:

 (A-B) * effectStrength + A

 gives you output with lots more apparent detail.

 It boosts contrast against surrounding pixels. A blur kernel with 1 pixel radius is equivalent to standard pixel sharpening, bigger blurs give a better effect but produce haloes around objects. You need a smarter blur that preserves edges to remove them.
	Take original image A, blur it to get image B. Then:

	(A-B) * effectStrength + A

	gives you output with lots more apparent detail.

	It boosts contrast against surrounding pixels. A blur kernel with 1 pixel radius is equivalent to standard pixel sharpening, bigger blurs give a better effect but produce haloes around objects. You need a smarter blur that preserves edges to remove them.