July 2015
Intermediate to advanced
174 pages
3h 45m
English
Content preview from OpenCV Computer Vision with JavaBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The mixture of Gaussians method
Although we can get very good results with the previous idea, some more advanced methods have been proposed in literature. A great approach, proposed by Grimson in 1999, is to use not just one running average, but more averages so that if a pixel fluctuates between the two orbit points, these two running averages are calculated. If it does not fit any of them, it is considered foreground.
Besides, Grimson's approach also keeps the variance of the pixels, which is a measure of how far a set of numbers is spread out, taken from statistics. With a mean and a variance, a Gaussian model can be calculated and a probability can be measured to be taken into consideration, yielding a Mixture of Gaussians model (MOG). This ...
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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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