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From "Gary Lucas (JIRA)" <>
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 14:39:21 GMT


Gary Lucas commented on IMAGING-126:

Well, the information about Commons Compress is good news.   I did quite a bit of searching
the other day for Java and LZW and never found it.   Just goes to show that Google doesn't
know everything.    Of course, when I saw Damjan's post, I tried "Java Unix Compress" and
the Commons Compress project was the first hit in my search...   Just goes to show that I
know even less that Google :-)

Even though I brought up the issue of the speed of the compressor in this discussion, it really
is a separate issue.  I will investigate the faster compressor and then open up a new issue
based on my results.   Any changes conducted as part of IMAGING 126 should focus on the size

I have a real dilemma in terms of making Imaging depend on another project or just lifting
the code out of the alternate project and adding it to Imaging.  Neither alternative is particularly
palatable.  Has the Apache community come up with a good practice for this kind of thing?

> TIFF and PNG images should not be bigger than the ones created by java ImageIO
> ------------------------------------------------------------------------------
>                 Key: IMAGING-126
>                 URL:
>             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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