"Importance samping" and "Early termination&a

[hojun, song]

hello~

I have question about QMC tap.

"Importance samping" and "Early termination"

What is difference?

sorry my english

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vraybetahelp
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Early termination
Early termination is a technique for reducing the samples taken for evaluating a blurry value. This basically works by looking at the samples as they are computed one by one and deciding, after each new sample, if more samples are required. Early termination is used throughout VRay for all blurry values. See also importance sampling.
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"Early termination is a technique for reducing the samples taken for evaluating a blurry value." ??? how ??? what basis ???
"if more samples are required" ??? when ???

[hojun, song]

[J_Bug]

I think your questions can only be answered by Vlado based on the logic he's coded into VRay or it could be that this is simply the basis of a QMC style sampler. To find out more about the nature of QMC do a search on Google. If you're looking to understand the values better to improve your work then there is a thread that Natty started about this somewhere on this forum.

I'm no mathematician but here's a link which looks pretty informative...
http://mathworld.wolfram.com/Quasi-M...tegration.html

--Jon

[hojun, song]

Thank you very much!

Thank you very much!
I konw that it is the application of a QMC theory.
but, option is more of control than of theory.
theory is a fundamental rule.
option is rule applied to renderer. so different...
my Question is 'what control' 'how control' 'how many control'
I want understanding and fast control in various conditions
not by some fortuity, by understanding option.
( I can not English well )
I am learning 3D, Vray, English, theory.
very difficult...

[Frances]

This may help you:

http://vray.info/entry.asp?entryID=99