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Re: Image warping in IDL [message #51275 is a reply to message #51188]

Fri, 10 November 2006 01:12

Wox
Messages: 184
Registered: August 2006

Senior Member

On Fri, 10 Nov 2006 10:05:25 +0100, Wox <nomail@hotmail.com> wrote:

> 2. Is there a "magic operation" for converting CP's and uvec/vvec so
> that xmap and ymap describe distortion of output pixels?

Maybe some simple analog example to make this clear:

Take a 1D polynomial for which you know the coeff. and degree:
y(t)=a+b.t+c.t^2+d.t^3

Is there a "magic operation" that can estimate/calculate a',b',c' and
d' in the following :
t(y)=a'+b'.y+c'.y^2+d'.y^3

The 2D splines are a little bit more complicated, but they are just
piecewise polynomial surfaces.

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[Message index]

		Image warping in IDL By: Wox on Wed, 08 November 2006 04:53
		Re: Image warping in IDL By: David Fanning on Fri, 10 November 2006 15:11
		Re: Image warping in IDL By: JD Smith on Fri, 10 November 2006 14:51
		Re: Image warping in IDL By: Wox on Tue, 14 November 2006 02:20
		Re: Image warping in IDL By: JD Smith on Mon, 20 November 2006 12:17
		Re: Image warping in IDL By: James Kuyper on Fri, 10 November 2006 08:38
		Re: Image warping in IDL By: Wox on Fri, 10 November 2006 01:12
		Re: Image warping in IDL By: Wox on Fri, 10 November 2006 01:05
		Re: Image warping in IDL By: JD Smith on Thu, 09 November 2006 11:50
		Re: Image warping in IDL By: Wox on Wed, 15 November 2006 04:18
		Re: Image warping in IDL By: Wox on Tue, 14 November 2006 08:20
		Re: Image warping in IDL By: Wox on Tue, 21 November 2006 01:18
		Re: Image warping in IDL By: JD Smith on Tue, 21 November 2006 09:10
		Re: Image warping in IDL By: Jeff Hester on Mon, 20 November 2006 09:00
		Re: Image warping in IDL By: Wox on Mon, 20 November 2006 01:18
		Re: Image warping in IDL By: JD Smith on Wed, 22 November 2006 08:22
		Re: Image warping in IDL By: Wox on Wed, 22 November 2006 00:21

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