[Insight-users] PNGwriter writes wrong scaling information

[Bill Lorensen]

Looks like ti should be fixed. But if you submit a gerrit patch, make
sure oyu also supply a test or modify an existing test.

The lack of a test is why your previous gerrit patch has not been approved.

Bill

On Mon, Dec 10, 2012 at 8:35 AM, Dženan Zukić <dzenanz at gmail.com> wrote:
> Hi everyone,
>
> I have noticed that ImageFileWriter, when writing png format, writes wrong
> pixel size information. It is not completely wrong, but it is not in
> accordance with png specification.
>
> When reading such files with OpenCV, I get following warning:
> libpng warning: Invalid sCAL ignored: invalid unit
> This is not just annoying and clutter-causing, but displaying it for every
> single image slows down my OpenCV processing.
>
> I used XnView to batch-edit the extracted slices and set some scaling which
> adheres to the specification to get rid of this warning.
>
> Now the question: should I correct this bug, or submit a bug report? My last
> bug-fixing ended non-gloriously :(
>
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