Can I convert an image into a grid of dots?

Question

Just a quick question.

Can this:

be done with image processing on an iOS device

Answer 1

You should be able to do this just by looping and drawing the circles in black and white, and then using that image as a mask for your image.

Here's the first link I found on Google about CoreGraphics masking, which you can probably adapt for your needs: http://cocoawithlove.com/2009/09/creating-alpha-masks-from-text-on.html

I'd imagine drawing lots of circles is something you can figure out with some Googling of your own.