July 2015
Intermediate to advanced
174 pages
3h 45m
English
Content preview from OpenCV Computer Vision with JavaBecome 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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Mixed reality web applications
The web application we are going to develop draws Fedora hats on top of the detected heads in a given image. In order to do this, the user uploads the image through a simple form, and then it is converted to an OpenCV matrix in memory. After conversion, a cascade classifier looking for faces is run over the matrix. A simple scale and a translation are applied to estimate the hat's position and scale. A transparent fedora image is then drawn on the specified position for each of the detected faces. The result is then returned through HTTP by giving the mixed reality picture to the user. Notice that all the processing happens on the server side, so the client is only left to upload and download the image, which is ...
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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.