November 2018
Beginner
310 pages
7h 25m
English
book
Learn OpenCV 4 by Building Projects - Second Edition
by David Millán Escrivá, Vinícius G. Mendonça, Prateek Joshi
Content preview from Learn OpenCV 4 by Building Projects - Second Edition
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Scalar object type
The Scalar object type is a template class derived from Vec with four elements. The Scalar type is widely used in OpenCV to pass and read pixel values.
To access Vec and Scalar values, we use the [] operator, which can be initialized from another scalar, vector, or value by value, as in the following sample:
Scalar s0(0);Scalar s1(0.0, 1.0, 2.0, 3.0);Scalar s2(s1);
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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.