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How can I measure the similarity between two images? [closed]
...ts with homogeneous coloring it will still work pretty well.)
Anyway, the idea is the compute the normalized dot-product of the two matrices.
C = sum(Pij*Qij)^2/(sum(Pij^2)*sum(Qij^2)).
This formula is actually the "cosine" of the angle between the matrices (wierd).
The bigger the similarity (let...
How to implement an abstract class in ruby?
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This is more like an interface actually but I get the idea. Thanks.
– Chirantan
Oct 8 '09 at 9:15
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Can iterators be reset in Python?
...see that your answer. I just answered the iterator question, and I have no idea about the csv module. Hopefully both answers are useful to the original poster.
– u0b34a0f6ae
Jul 16 '10 at 15:33
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Convert Data URI to File then append to FormData
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Just an idea: array=[]; array.length=binary.length; ... array[i]=bina... etc. So the array is pre-allocated. It saves a push() having to extend the array each iteration, and we're processing possibly millions of items (=bytes) here, ...
Run command on the Ansible host
...rence to other hosts, use the ‘delegate_to’ keyword on a task. This is ideal for placing nodes in a load balanced pool, or removing them. It is also very useful for controlling outage windows. Be aware that it does not make sense to delegate all tasks, debug, add_host, include, etc always get ex...
ASP.NET MVC Relative Paths
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For what it's worth, I really hate the idea of littering my app with server tags just to resolve paths, so I did a bit more research and opted to use something I'd tried before for rewriting links - a response filter. In this way, I can prefix all absolute paths w...
How can I make a .NET Windows Forms application that only runs in the System Tray?
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Thread.Sleep is a bad idea: you'll end up using more CPU and battery than if you just did Application.Run like you're meant to.
– Sneftel
Jun 18 at 10:51
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Preview an image before it is uploaded
...s is. Works in IE7, IE8, FF and Chrome. Please test in IE9 and report.
The idea of IE preview was found here:
http://forums.asp.net/t/1320559.aspx
http://msdn.microsoft.com/en-us/library/ms532969(v=vs.85).aspx
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What is the proper way to display the full InnerException?
...d problems. Including the exception type name in the output is also a good idea
– adrianm
Sep 5 '18 at 8:04
@adrianm g...
Where to store global constants in an iOS application?
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I agree #define is a bad idea, I just wanted to correct the error he made that it will create multiple objects. Also, pointer equality can't be relied on even for constants. It might be loaded from NSUserDefaults or something. Always use isEqual:.
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