October 2015
Intermediate to advanced
230 pages
5h 10m
English
Content preview from OpenCV with Python BlueprintsBecome 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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Summary
This chapter showed a robust feature tracking method that is fast enough to run in real time when applied to the live stream of a webcam.
First, the algorithm shows you how to extract and detect important features in an image independently of perspective and size, be it in a template of our object of interest (train image) or a more complex scene in which we expect the object of interest to be embedded (query image). A match between feature points in the two images is then found by clustering the keypoints using a fast version of the nearest neighbor algorithm. From there on, it is possible to calculate a perspective transformation that maps one set of feature points to the other. With this information, we can outline the train image as ...
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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.