Re: Back to basics: Interpolation teaser

On Sep 22, 1:10 pm, Martin Leese <ple...@xxxxxxxxxxxxxxxxxxxxxxxxxx>
wrote:
Pixel.to.life wrote:
Hi, All,

Here is a question on interpolation and resampling.
...
My questions are:

- what can be inferred about the nature of the interpolation method
employed given only the above information?
- on the resample circle image, the circle profile displays some 'saw
tooth' patterns. Is that an artifact/limitation of interpolation
scheme? Or it is expected?
- if you think there are artifacts in the resampled images, what could
be a possible solution or a better way to resample?

The interpolated images contain only black
and white, no gray. Perhaps the problem is
that your output images are binary when they
should be graytone.

--
Regards,
Martin Leese
E-mail: ple...@xxxxxxxxxxxxxxxxxxxxxxxxxx
Web:http://members.tripod.com/martin_leese/

Marco, it most definitely is buggy..no doubt. I wanted to get pointers
on what all problems it has before going into the code. Amazing how a
simple operation can go untested sometimes.

Martin has a good point..lack of greytones.

Thanks for your responses.

.

Relevant Pages

  • Re: Back to basics: Interpolation teaser
    ... On Sep 22, 1:10 pm, Martin Leese ... on the resample circle image, the circle profile displays some 'saw ... The interpolated images contain only black ...
    (sci.image.processing)
  • image resampling using IPT
    ... I have some medical images with pixel dimensions of say 1x1x5.5 mm ... transform and then resample them using the image processing toolbox ... array index as a coordinate and this is giving me some problems. ... dimension weighted differently to the x,y dimension when resampling is ...
    (comp.soft-sys.matlab)
  • Re: Using Imager module to resample images
    ... I've been thinking about resampling the images on the fly. ... Will the use of Imager take up a lot of CPU resources? ... use Imager to resample it. ... perldoc Imager::Transformations for converting and scaling ...
    (comp.lang.perl.misc)
  • Re: Image resampling in PPT?
    ... In the future, be sure to have the marketing people, resample the images ... When resampling images it is important change the resolution first, ... into powerpoint via (insert> pictures> from ...
    (microsoft.public.powerpoint)
  • Linux based TIFF resampling
    ... resample TIFF images to a different resolution... ... paper size from 18x24 inches to 36x48 inches or larger, ... from originals at 400 dpi. ...
    (comp.graphics.misc)