[Pkg-octave-devel] Bug#615587: octave-image: hough_line function returns different results on different calls on same image

[Jussi Judin]

Package: octave-image
Version: 1.0.13-1
Severity: normal


hough_line() function returns different results between calls on the same image. Following code demonstrates this:

img = zeros(10);
img(5, :) = 1;
[h1 r1] = hough_line(img);
hough_line(img);
hough_line(img);
[h2 r2] = hough_line(img);
h1 - h2

h1 - h2 should naturally return 0 in all places but it often results quite large non-zero values. If this doesn't happen, run that code again and at some point this should return non-zero result.

This applies also to testing/unstable version of octave-image.

-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (990, 'testing'), (100, 'unstable'), (99, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.37-trunk-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages octave-image depends on:
ii  imagemagick                  8:6.6.0.4-3 image manipulation programs
ii  libc6                        2.11.2-11   Embedded GNU C Library: Shared lib
ii  libgcc1                      1:4.4.5-12  GCC support library
ii  libstdc++6                   4.4.5-12    The GNU Standard C++ Library v3
ii  octave3.2                    3.2.4-8     GNU Octave language for numerical 

octave-image recommends no packages.

octave-image suggests no packages.

-- no debconf information