July 2011
Intermediate to advanced
648 pages
13h 2m
English
book
OpenCL Programming Guide
by Aaftab Munshi, Benedict R. Gaster, Timothy G. Mattson, James Fung, Dan Ginsburg
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Chapter 14. Image Histogram
A histogram is a statistic that shows the frequency of a certain occurrence within a data set. The histogram of an image provides a frequency distribution of pixel values in the image. If the image is a color image, the pixel value can be the luminosity value of each pixel or the individual R, G, and B color channels. We have either a single histogram if the luminosity is used as the pixel value or three individual histograms, one for each channel, if the R, G, and B color channel values are used. Both types of histograms are useful; the luminosity histogram is more accurate at describing the perceived brightness distribution in an image, whereas the R, G, B color histogram can be a better choice in determining if ...
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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.