Edge Detection of Image in iPhone Using Image Magick

Question

I want to convert RGB image into Below Image. I am using ImageMagick Library . I want help to know that by which functions i can convert in Original Image into Image-2. Here

Answer 1

@Apoorv i dont know any thing about but if you just want edge detection may be you can use openCV instead.

here is the link for some of the source code and tutorials of how to detect edge in iphone using openCV

iPhone and OpenCV

http://dasl.mem.drexel.edu/~noahKuntz/openCVTut5.html

here is a sample project that i have created in iphone using openCV

original image

image after edge detection.

Answer 2

There's no way to be sure if that image was even generated with Image Magick. But if you read this answer, it's worth taking a look at the charcoal filter:

convert holocaust_sm.jpg -charcoal 5 charcoal.gif

My suggestion is that you also experiment with thresholds, and take a look at the Children's Color-In Outline Image example, since I believe it wasn't a single filter that achieved that effect (assuming it was generated by IM).

After researching for a while I believe that an effect like the one you are looking for could be achieved through a mixture of several filters. You must check this page, which presents a huge collection of cool effects using IM.

This is my attempt:

convert ms8nP.png -colorspace Gray -blur 0x.7 -negate -edge 2 -negate -threshold 40% -blur 0x.5 out.png