[jira] [Commented] (IMAGING-186) Add sCAL support to PNG reading and writing

["Benedikt Ritter (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMAGING-186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15399025#comment-15399025 ] 

Benedikt Ritter commented on IMAGING-186:
-----------------------------------------

[~remery] patches always welcome!!!

> Add sCAL support to PNG reading and writing
> -------------------------------------------
>
>                 Key: IMAGING-186
>                 URL: https://issues.apache.org/jira/browse/IMAGING-186
>             Project: Commons Imaging
>          Issue Type: Improvement
>          Components: Format: PNG
>            Reporter: Ric Emery
>            Priority: Minor
>              Labels: feature, newbie
>
> It would be nice if the optional PNG - Physical Scale - sCAL chunk could be read and written. 
> http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.9
> For my use case, the pHYs chunk is not a good alternative. the pHYs x and y values are ints which lose necessary precision.
> I have a patch (with junits) ready for your review if you are interested.
> Thanks



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