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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 is below two images. I would like to use Only ImageMagick Library. I would like to do Image Processing simillar to this Link in Objective C.

enter image description here

enter image description here

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apoorv shah
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2 Answers2

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@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

enter image description here

image after edge detection.

enter image description here

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Robin
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  • Yes. I have already use OpenCV. But I want converted image. In that image when there is difference beetween two color it shows as black border. This is not simple edge detection. – apoorv shah Feb 18 '11 at 04:38
  • Can you tell your requirements more clearly. about the `converted image` and `difference beetween two color it shows as black border` – Robin Feb 18 '11 at 04:43
  • I want to do like this link: http://stackoverflow.com/questions/4062365/turning-photo-into-cartoon-using-php – apoorv shah Mar 21 '11 at 04:05
  • Hi Robin In the above the output shows with black and gray lines....i want white background with black lines.. Plz guide me – Babul Oct 16 '12 at 10:32
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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
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karlphillip
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  • After applying threshold with 40% values, it gives white image.In magickwand function is:MagickThresholdImage(magick_wand, 40); – apoorv shah Mar 22 '11 at 05:21
  • Do you have any idea to implement step 3 of this link:http://stackoverflow.com/questions/4062365/turning-photo-into-cartoon-using-php – apoorv shah Mar 22 '11 at 07:31
  • I might, but that's another question and I'll be happy to answer it in another thread. – karlphillip Mar 22 '11 at 13:09