[Octave-bug-tracker] [bug #50471] imshow(I, []) or imshow(I, [a b]) fail to scale intensities with RGB images

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?50471>

                 Summary: imshow(I,[]) or imshow(I,[a b]) fail to scale
intensities with RGB images
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Mon 06 Mar 2017 07:43:58 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: R.S.Carmenes
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.1
        Operating System: GNU/Linux

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Details:

Hi,

imshow(I, []) and imshow(I, [a b]) fail to rescale display intensities (= has
no effect whatsoever on display) when I is a color image of any type (uint8,
uint16, single or double).

It works as expected with gray images though.

The problem appears at least with octave-4.0.3 and octave-4.2.1 and with or
without image package loaded, and with at least the gnuplot and fltk
graphics_toolkit (did not try the qt).




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