Re: Scanning and interpolation

becka@rz.uni-duesseldorf.de
Sat, 24 Apr 1999 19:36:57 +0200 (MEST)

Hi !

> > Is the algorithms behind this [Interpolation] free ?
>
> I hope so. If someone patented this :
>
> interpolated_pixel(between_pixel_1_and_pixel_2)=
> ( pixel_1*distance_to_1+
> pixel_2*distance_to_2) /
> ( distance_to_1+distance_to_2 )
>
> he is definitely insane.

In deed. Just as me. Of course it must be:

interpolated_pixel(between_pixel_1_and_pixel_2)=
( pixel_1*distance_to_2+
pixel_2*distance_to_1) /
( distance_to_1+distance_to_2 )

As otherwise you'd swap the direction of the gradient.

CU, ANdy

-- 
= Andreas Beck                    |  Email :  <andreas.beck@ggi-project.org> =

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