Central Slice Theorem for 2D FFT
DO anyone know how to apply 2D Central slice theorem for 2D Fourier Transformed Image? FOr this forst we need to mapp the samples of FT in Cartesian coordinate system to Polar.
Can anyone help with this?
Nghtcwrlr
********************Kudos are alwayzz Welcome !! ******************
Similar Messages
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hi all,
i have made a small VI to apply the central limit theorem, it works very good except that it is slow, i know i can use a more powerful computer and it will be faster, but i want to optimize this vi for minimum time.
anyone can help?
what i do in this vi: 1-generate N (usualy 30) unigue random positive integer numbers
2-i use this 30 integers as indices to select 30 random elements from an array X (which has at least 40 samples)
3- i get the average of this 30 randomly selected elements from array X
4- i repeat the previous 3 steps at least 10^6 times.
5- i draw a histogram.
is there a way to make this vi faster (as possible) , even if i have to change the algorithm, as long as it does the same.
thank you
Solved!
Go to Solution.
Attachments:
CLT.vi 34 KBHere's what I would do.
For 1M samples, it takes abour 2s on my computer.
If you parallelize the outer loop, it will be proportionally faster (~0.15s total on my 16 core dual Xeon )
Code assumes that the input array is >30 and that you want to pick 30 random elements. Change to diagram constant wired to N of the inner loop to change the pick size (or change to a control on the toplevel diagram).
LabVIEW Champion . Do more with less code and in less time .
Attachments:
CLT_Code.png 5 KB
CLT_MOD.vi 26 KB -
I am looking for step by step instructions to configure my mac mini server to support the following:
1. Central itunes server for all my devices (ipad, ipod, iphone, etc.)
2. Central file server so that my windows devices can save and retrieve data from the central system (the mac does not show up in the network for the windows systems - all running windows XP or 7)
Thanks,
KeithYou will need to enable file sharing in System Preferences
as well as setting up sharing and permissions for the
directories that you want shared. You may also want to
setup a non-administrative user or allow limited guest
access. The user would require entering a user name and
password to make the connection, but would allow remotes
to change files, if set up tat way.
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Slice battery for thinkpadt4​30s
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I have a thinkpad t430s with a 6 cell battery, i need to add batterylife and i find a socket that appears to be a socket for a slice battery in the bottom of my laptop however when i search for the battery on lenovo website or anywhere else i find nothing about a slice battery for the t430s and the 19+ slice battery for the x series doesn't seem it would fit ...
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Yes, is1981 was right. As told by ‘is1981’ you can use ‘Ultrabay Battery’ but only thing is that you can use either Battery or DVD drive. However you can keep the Ultrabay battery has backup battery.
ThinkPad Battery 43 (3 cell bay)
Hope this helps.
Best regards,
Hemanth Kumar
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Can I use Bridge CS6 as a central image database for linking to multiple documents?
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I am happy that the issue is already clear!
Beeing busy makes life more interesting )
May I ask for your private mail, because I had some questions regarding your LSO implementation.
Mine is:
[email protected]
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best regards,
Zsolt
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Greetz from Germany
PierreSee my answer in the other post:
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http://www.cisco.com/en/US/products/hw/switches/ps708/prod_module_installation_guide09186a00801d3b60.html#wp59534
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I am trying to set up central autoreactions on a Sol Man system (CEN) to monitor certain MTEs on a satellite system (soon to be many more satellite systems and other MTEs). I know that auto-reactions can be assigned to a satellite system and specific MTE class in RZ21 on CEN, but I don't want auto-reactions for every MTE in a specific class. For example, I want to monitor the percentage full for a specific file system, which has the class "FilesystemPercentageUsed", but there are many other MTEs in the parent "file systems" branch which also have the same class. I only want a central auto-reaction for the one--not all of the MTEs in that class.
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> For example, I want to monitor the percentage full for a specific file system, which has the class "FilesystemPercentageUsed", but there are many other MTEs in the parent "file systems" branch which also have the same class. I only want a central auto-reaction for the one--not all of the MTEs in that class.
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Regards, Michael
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