March 2020
Intermediate to advanced
366 pages
9h 8m
English
book
OpenCV 4 with Python Blueprints - Second Edition
by Dr. Menua Gevorgyan, Michael Beyeler (USD), Arsen Mamikonyan, Michael Beyeler
Content preview from OpenCV 4 with Python Blueprints - Second Edition
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Looking at feature detection
In computer vision, the process of finding areas of interest in an image is called feature detection. Under the hood, for each point of the image, a feature detection algorithm decides whether an image point contains a feature of interest. OpenCV provides a whole range of feature detection (and description) algorithms.
In OpenCV, the details of the algorithms are encapsulated and all of them have similar APIs. Here are some of the algorithms:
- Harris corner detection: We know that edges are areas with high-intensity changes in all directions. Harris and Stephens came up with this algorithm, which is a fast way of finding such areas. This algorithm is implemented as cv2.cornerHarris in OpenCV.
- Shi-Tomasi corner ...
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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.
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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.