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From "Damjan Jovanovic (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IMAGING-126) TIFF and PNG images should not be bigger than the ones created by java ImageIO
Date Thu, 27 Feb 2014 13:40:19 GMT

    [ https://issues.apache.org/jira/browse/IMAGING-126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13914503#comment-13914503
] 

Damjan Jovanovic commented on IMAGING-126:
------------------------------------------

I am surprised you guys didn't see we have an LZW implementation in Commons Compress, which
does .Z files and one of the ZIP compression methods. Please see COMPRESS-243 where I developed
it and compared it to the algorithm done by Commons Imaging. It's also much faster.


> TIFF and PNG images should not be bigger than the ones created by java ImageIO
> ------------------------------------------------------------------------------
>
>                 Key: IMAGING-126
>                 URL: https://issues.apache.org/jira/browse/IMAGING-126
>             Project: Commons Imaging
>          Issue Type: Improvement
>          Components: Format: PNG, Format: TIFF
>    Affects Versions: 1.0
>         Environment: W7
>            Reporter: Tilman Hausherr
>            Priority: Minor
>         Attachments: Imaging_126_patch_1.patch, pdfbox-1870-devicen3-01.png, pdfbox-1870-devicen3-01.tif,
pdfbox-1870-devicen3.pdf-1.png, pdfbox-1870-devicen3.pdf-1.tif
>
>
> I tried to use Apache Imaging for the PDFBOX project (PDFBOX-1734) because of problems
with setting the tiff resolution in java imageio.
> While the code is pretty nice, I found that the generated images are sometimes much bigger
in size than the ones generated by java imageio.
> Example:
> pdfbox-1870-devicen3-01.png 50 KB (imageio)
> pdfbox-1870-devicen3.pdf-1.png 70 KB (imaging)
> pdfbox-1870-devicen3-01.tif 401 KB (imageio)
> pdfbox-1870-devicen3.pdf-1.tif 1063 KB (imaging)



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