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https://issues.apache.org/jira/browse/SANSELAN-72?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Damjan Jovanovic resolved SANSELAN-72.
--------------------------------------
Resolution: Fixed
Fix Version/s: 1.0
The problem with the grey background was that Sanselan was using the worst
possible algorithm described in Section 9.1 of the PNG spec. I've changed it to
use the best one as of commit 1325915.
Both issues are now gone -> resolving fixed.
> Incorrect reading TIFF file
> ---------------------------
>
> Key: SANSELAN-72
> URL: https://issues.apache.org/jira/browse/SANSELAN-72
> Project: Commons Sanselan
> Issue Type: Bug
> Components: Format: PNG, Format: TIFF
> Affects Versions: 1.x
> Reporter: VVD
> Fix For: 1.0
>
> Attachments: in.png, in.tif, out-png-IM.png, out-tif.png
>
>
> I found 2 bugs.
> I have tif file in.tif.
> 1. After convert it to png (bmp, tga, etc) by Sanselan it getting horizontal
> lines.
> {code}
> Sanselan.writeImage(Sanselan.getBufferedImage(new File("in.tif")), new
> File("out-tif.png"), ImageFormat.IMAGE_FORMAT_PNG, null);
> {code}
> gwenview, eog, kolourpaint, gimp, etc show in.tif without lines and out.png
> with lines.
> For example 1st line at ~860 points from top and in full width of picture.
> 2. After convert it to png by convert utility from ImageMagic, and then
> convert it to png (bmp, tga, etc) by Sanselan it became "gray" - all white
> pixels become gray.
> {code}$ convert in.tif in.png{code}
> {code}
> Sanselan.writeImage(Sanselan.getBufferedImage(new File("in.png")), new
> File("out-png-IM.png"), ImageFormat.IMAGE_FORMAT_PNG, null);
> {code}
> gwenview, eog, kolourpaint, gimp, etc show in.png as black and white, but
> out-png-IM.png as black and gray.
> I'll attach all 4 files.
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