Question

I’d like to generate and draw some bezier paths based on an image in my app. The image will be really simple (black lines on a white background) such as the following:

Is there a method to process the image and create a bezier path based on the black lines? I’m completely lost here.

If you’re wondering the reason for needing the image to be a bezier path, I’m going to be comparing the generated bezier path with another bezier path that the user draws (basically a picture-password that the user will have to draw).

If there’s a better way to accomplish comparing an image to a bezier path, I’m all ears. Or, if bezier paths aren’t the way to go, then let me know. Thanks!

Answer 1

Why not do it the other way around?

• let the user draw the path
• create an image from the drawn path using core graphics
• compare both images with a framework like opencv