[Octave-patch-tracker] [patch #8612] impyramid.m for image package

[Avinoam Kalma]

Follow-up Comment #3, patch #8612 (project octave):

Here is a modified version.
answer to comment#1:

1. I could fix the borders for the 'reduce' case with the 
 'replicate' keyword in the imfilter.  There is is still 
difference of 1-2 gray levels in the image. 
For the 'expand' case, I have corrected the image size which 
was wrong, but I did not find a way to fix the border issue.
In the rest of the image, there a difference of 1-2 graylevels,
which is acceptable.
2. it seems to me that 'reduce' step is more natural, but to
be matlab compatible I have dropped the default value.
3. Done
4. It's beyond my skills for now, so I have left a FIXME comment
5. Done
6. Tabs were deleted. I did not find trailing whitespaces.
7.  Done.

Two issues remain:
1. Fix the borders in the 'expand' case
2. Support n-dimensional images

I will be glad if you will help me with the first issue. The 2nd
could (IMHO) be postponed to later stage.

Thanks!
 

(file #33251)
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