comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » Optimisation in IDL?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Optimisation in IDL? [message #41215]

Mon, 18 October 2004 07:13

helaha
Messages: 26
Registered: March 2004

Junior Member

I have following optimisation problem and want to ask if anybody could
give me some hints for implementing it in IDL.
There is a function, depending on given x,y and g values (simply the
x,y values of 2D image pixels and their grey levels g).
I have to find the maximum of the following function and the constants
a and b should be calculated:
MAX(Sum1 (Sum2 (Dirac(log(g(x,y) - ax -by -g))))),
where Sum1 is the sum over all possible grey values, Sum2 is the sum
over all possible x,y values and Dirac is the dirac function. The
function itself is not the problem, rather the algorithm for finding
the right constants a and b.

Thanks for any input,
Helmut Ahammer

Report message to a moderator

[Message index]

		Optimisation in IDL? By: helaha on Mon, 18 October 2004 07:13
		Re: Optimisation in IDL? By: luxx on Sat, 23 October 2004 15:34

Previous Topic:	IDL Virtual Machine
Next Topic:	Plotting 'continents' in object graphics...

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 04:03:22 PDT 2025

Total time taken to generate the page: 0.32613 seconds