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

["Ric Emery (JIRA)" <ji...@apache.org>]

Ric Emery created IMAGING-186:
---------------------------------

             Summary: 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


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



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)