Computer vision for Java developers

At JavaZone this year, I gave the talk “Computer Vision for mobile Java developers”. Here, I live code finding conference badges in a picture. The coding is iterative and interactive and I use it to illustrate Haar cascades, Canny edge detection, Otsu thresholding, contour detection, erosion and dilation and contour analysis.

In my experience, developing a good algorithm with OpenCV is about setting up yourself for feedback. I read an example image, add one and one processing step to it and display the results as I work. This both works well as a development technique and is a good framework to explain what’s going on.

If you’re looking for an entertaining and practical explanation of OpenCV image processing, this talk covers a lot of ground.

Copyright © 2016 Johannes Brodwall. All Rights Reserved.

About Johannes Brodwall

Johannes is Principal Software Engineer in SopraSteria. In his spare time he likes to coach teams and developers on better coding, collaboration, planning and product understanding.
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