April 2013
Beginner
224 pages
7h 22m
English
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Gamma and linear matrix
Although the look of an image can be adjusted at the time of acquisition (see Customizing the image, page 98) or in post production, the picture the viewer will finally see depends on the characteristics of their TV set. The cathode ray display tube, however, has certain limitations. The television image is created by a stream of electrons bombarding a phosphor coating on the inside face of the display tube. The rate of change of this beam and therefore the change in picture brightness does not rise linearly, in-step with changes in the signal level corresponding to the changes in the original image brightness variations.
Gamma correction
(a) Gamma due to tube characteristic
(b) Gamma correction
As shown in graph (a) ...
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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.