A Simple iPhone Image Processing Library

By admin
On March 20, 2009

Chris Greening has put together simple-iphone-image-processing, a “simple C++ class with an Objective-C wrapper that provides a set of common image processing tasks” as well as UIImage conversion.

So what do you get..?

• Canny edge detection – https://en.wikipedia.org/wiki/Canny_edge_detection
• Histogram equalisation – https://en.wikipedia.org/wiki/Histogram_equalisation
• Skeletonisation – https://en.wikipedia.org/wiki/Topological_skeleton
• Thresholding, adaptive and global – https://en.wikipedia.org/wiki/Thresholding_(image_processing)
• Gaussian blur (used as a preprocessing step for canny edge detection) – https://en.wikipedia.org/wiki/Gaussian_blur
• Brightness normalisation – https://en.wikipedia.org/wiki/Normalization_(image_processing)
• Connected region extraction – https://en.wikipedia.org/wiki/Blob_extraction
• Resizing – using interpolation

0 responses to “A Simple iPhone Image Processing Library”

1. Mike says:

   March 20, 2009 at 17:12

   Thanks for the code. I was actually in the process of doing this myself in pure C. I got as far as edge detection, R/G/B adjust, gamma adjust, greyscale and a few others.

   Is there a way to use the lib with a UIImage as input in color?

   Thanks!

2. Jeff says:

   January 10, 2010 at 06:07

   do you have any functions that can “warp” an image? like put dents in the image or stretch out the image (like a face shot).

   thanks,
   jeff