May 2019
Intermediate to advanced
494 pages
14h 6m
English
book
OpenCV 4 Computer Vision Application Programming Cookbook - Fourth Edition
by David Millán Escrivá, Robert Laganiere
Content preview from OpenCV 4 Computer Vision Application Programming Cookbook - Fourth Edition
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Segmenting images using watersheds
The watershed transformation is a popular image-processing algorithm that is used to segment an image into homogenous regions quickly. It relies on the idea that when the image is seen as a topological relief, the homogeneous regions correspond to relatively flat basins, delimited by steep edges. As a result of its simplicity, the original version of this algorithm tends to over-segment the image, which produces multiple small regions. This is why OpenCV proposes a variant of this algorithm that uses a set of predefined markers that guide the definition of the image segments.
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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.