April 2020
Intermediate to advanced
438 pages
12h 2m
English
Content preview from Python Image Processing Cookbook
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How it works...
The following screenshot shows an HSV colormap for fast color lookup. The x axis denotes hue, with values in (0,180), the y axis (1) denotes saturation with values in (0,255), and the y axis (2) corresponds to the hue values corresponding to S = 255 and V = 255. To locate a particular color in the colormap, just look up the corresponding H and S range, and then set the range of V as (25, 255). For example, the orange color of the fish we are interested in can be searched in the HSV range from (5, 75, 25) to (25, 255, 255), as observed here:
The inRange() function from OpenCV-Python was used for color detection. It accepts the ...
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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.
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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.