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[Octave-bug-tracker] [bug #51769] [octave forge] (image) imresize biline
From: |
Christof Kaufmann |
Subject: |
[Octave-bug-tracker] [bug #51769] [octave forge] (image) imresize bilinear interpolation inaccurate |
Date: |
Wed, 16 Aug 2017 17:01:38 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 |
URL:
<http://savannah.gnu.org/bugs/?51769>
Summary: [octave forge] (image) imresize bilinear
interpolation inaccurate
Project: GNU Octave
Submitted by: christofkaufmann
Submitted on: Wed 16 Aug 2017 09:01:37 PM UTC
Category: Octave Forge Package
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Inaccurate Result
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 4.0.3
Operating System: Any
_______________________________________________________
Details:
octave-image version 6.2.1 (default branch from repository)
Hi,
I noticed very inaccurate results when using the 'bilinear' method with
imresize. I can give a small example:
in = checkerboard (1, [2 2]);
imresize (in, 0.5, 'bilinear')
## gives:
## ans = 0.0 0.7
## 1.0 0.0
The expected behaviour would be (which matlab would give for a larger
example):
imresize (in, 0.5, 'bilinear')
## gives:
## ans = 0.50 0.35
## 0.50 0.35
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?51769>
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- [Octave-bug-tracker] [bug #51769] [octave forge] (image) imresize bilinear interpolation inaccurate,
Christof Kaufmann <=