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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Generating HDR images using multiple exposure images
Now, once we know how it's possible to get more pictures, we can take multiple photos that have very little or no overlapping dynamic range. Let's have a look at the most popular algorithm for HDR, first published by Paul E Debevec and Jitendra Malik in 2008.
It turns out that if you want to have good results, you have to have pictures that are overlapping, to make sure you have good accuracy and since there is noise in the photos. It's usually common to have 1, 2, or at most 3 stops difference from picture to picture. If we were to shoot five 8-bit photos with a difference of 3 stops, we would cover the human eye's one million to one sensitivity ratio:
Now let's take a closer look at ...
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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.