December 2012
Intermediate to advanced
340 pages
8h 3m
English
Content preview from Mastering OpenCV with Practical Computer Vision ProjectsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Generating an "alien" mode using skin detection
Now that we have a sketch mode, a cartoon mode (painting + sketch mask), and an evil mode (painting + evil mask), for fun let's try something more complex: an "alien" mode, by detecting the skin regions of the face and then changing the skin color to be green.
Skin-detection algorithm
There are many different techniques used for detecting skin regions, from simple color thresholds using RGB (Red-Green-Blue) or HSV (Hue-Saturation-Brightness) values or color histogram calculation and reprojection, to complex machine-learning algorithms of mixture models that need camera calibration in the CIELab color space and offline training with many sample faces, and so on. But even the complex methods don't ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.