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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Understanding approaches for using dodging and burning techniques
Dodging decreases the exposure for areas of the image that we wish to make lighter (than before) in an image, A. In image processing, we usually select or specify areas of the image that need to be altered using masks. A mask, B, is an array of the same dimensions as the image on which it can be applied (think of it as a sheet of paper you use to cover the image that has holes in it). "Holes" in the sheet of paper are represented with 255 (or ones if we are working on the 0-1 range) in an opaque region with zeros.
In modern image editing tools, such as Photoshop, the color dodging of the image A with the mask B is implemented by using the following ternary statement that acts ...
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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.