Re: PNG issue
Posted by
Rainer M. Engel on
Aug 29, 2013; 9:31am
URL: http://imagej.273.s1.nabble.com/PNG-issue-tp5004564p5004607.html
Am 27.08.2013 10:58, schrieb Rainer M. Engel:
> Hello everyone,
>
> there seems to be a problem with the png-built-in-compression which is
> good to have but not to deactivate, at least I think.
>
> The attached macro creates n-Files in a certain resolution. It occurred
> to me on different systems, that images containing only black and white
> pixels (binary) will most likely have this problem. In my passes up to 3
> Images out of 2000 will not reopen in ImageJ. That doesn't mean they are
> overall corrupt since PS and other Tools can open them.
>
> What does the macro do?
> 1 Step: it creates n-Images inside of a user defined working folder
> 2 Step: these images are opened again
>
> There are two optional settings (rotation and blur). It seems to me, the
> more grey pixels there are, the more likely all will be fine.
>
> What do you encounter?
>
> Best regards,
> Rainer
>
>
No one, nothing?
I know a similar, maybe the same issue (by sharing libraries) with
VirtualDub exporting to a png-image sequence. If the images are overall
grayscale.
As a note, if you run into the same issue like me, switch to BIO-Formats
for opening those images with ImageJ/Fiji; no solution but a working
procedure.
Thank you.
RME
--
Rainer M. Engel, Dipl. Digital Artist
scientific|Media GbR
Pichelsdorfer Str. 143
13595 Berlin
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