Learning about Computer Vision

Question

I am really intrigued by the field of computer vision and the potential it has. Are there any examples (preferably implemented in .NET) which I can study along with a reference book?

Answer 1

Here's a large collection of code, toolkits, and apps you might find useful

http://www.cs.cmu.edu/~cil/v-source.html

Answer 2

There is the OpenCV project on sourceforge with a book that you can get as well. You can see it here. However, that is not a .NET solution it is C

Answer 3

OpenCV (Open Computer Vision) is the most popular library, and it has been wrapped for C#:

http://www.codeproject.com/KB/cs/Intel_OpenCV.aspx

Some discussion about this wrapper and the library in general is here:

http://coolthingoftheday.blogspot.com/2008/08/opencv-open-source-computer-vision-for.html

Answer 4

I recommend Open Computer Vision Library. It's much spoken of and looks promising. It even has an O'Reilly accompanying book :)

The Open Computer Vision Library has > 500 algorithms, documentation and sample code for real time computer vision. Tutorial documentation is in O'Reilly Book

Answer 5

I've done a bit of work with SIFT in the recent past and it seems to be a rather interesting modern algorithm for feature detection), which is one of the major (and perhaps more advanced) topics within machine vision. Someone has written a C# library for SIFT with a pretty nice example that can automatically stitch together separate photographs of the same scene. Admittedly, this isn't a very complete answer, and I can't recommend a reference book, but hopefully it should be of some use to you anyway...

Answer 6

You could start by looking at some of the similar questions on this site:

• where-do-i-start-learning-about-image-processing-and-object-recognition
• image-processing-textbook
• computer-vision-reference

I can also look at these two sites:

• http://www.cs.cmu.edu/afs/cs/project/cil/ftp/html/vision.html
• http://www.cs.cf.ac.uk/Dave/Vision_lecture/Vision_lecture_caller.html

The sites provide information, tutorials and code examples, even though they are not actively maintained anymore.

Answer 7

While the OpenCV library is interesting to use, it doesn't offer a lot of transparency as you learn. If you're interested in actually learning about the field, I would recommend looking into low-level image processing libraries and implementing your own Computer Vision applications. Once you've coded your own basic CV applications, using the OpenCV library becomes a lot easier. I would suggest the following topics to advance quickly through the basics:

• sobel operators for edge detection
• trying your hand at color segmentation
• reconstructing 3d information from stereo images using disparity maps

Here's a site with some good test images (http://www.cs.cmu.edu/~cil/v-images.html).

I also found a good resource of course slides that cover the majority of these topics at (http://www.cs.nott.ac.uk/~tpp/G5BVIS/lectures.html)

Happy hacking =)

Answer 8

Sample Vision Code

• Vision Source Code - Carnegie Mellon University
• Open Source Computer Vision Library - Sourceforge
• Computer Vision Test Images
• libsift - Scale-Invariant Feature Transform implementation
• C# wrapper for OpenCV

Resources

• Computer Vision "Home" - Carnegie Mellon University
• Lecture on Vision Systems - Cardiff School of Computer Science
• Lectures on Computer Vision Systems - The University of Nottingham Computer Science Department
• Feature Detection - Wikipedia Article
• Scale-Invariant Feature Transform - Wikipedia Article

Stack Overflow Questions

• Where do I learn about Image Processing and Object Recognition?
• Image Processing Textbooks?
• Computer Vision References