June 2019
Intermediate to advanced
348 pages
8h 28m
English
Content preview from Qt 5 and OpenCV 4 Computer Vision Projects
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QImage
While QPixmap is mainly for displaying images in Qt, QImage is designed and optimized for I/O, and for direct pixel access and manipulation. With this class, we can get information about images, such as its size, whether it has an alpha channel, whether it is a grayscale image and the color of any pixels in it.
QImage is designed for direct pixel access and manipulation, and it provides functions to do image processing, such as pixel manipulation and transformations. After all, the Qt library isn't a library that's dedicated to image processing, and so the features it provides in this domain can't slake our requirements in this chapter. Therefore, we will be using OpenCV to do the image processing after we convert QImage objects into ...
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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.