[
https://issues.apache.org/jira/browse/PDFBOX-1734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13895907#comment-13895907
]
Tilman Hausherr commented on PDFBOX-1734:
-----------------------------------------
Any arguments against using Apache Imaging instead of imageio?
https://commons.apache.org/proper/commons-imaging/
Pro:
- its an Apache project
- easy to use
- it does support writing the resolution and choosing a TIFF compression
- doesn't use buggy java imaging
- ImageIOUtil gets much shorter
Minus:
- additional library, with size 674 KB
Its important to support TIFF; although the format feels like the car designed
by Homer Simpson, it is popular in document archiving applications, especially
the G4 compression.
{code}
ImageFormat imf = ...... choose one ....
Map<String, Object> params = new HashMap<String, Object>();
params.put(ImagingConstants.PARAM_KEY_PIXEL_DENSITY,
PixelDensity.createFromPixelsPerInch(resolution, resolution));
if (imf == ImageFormats.TIFF)
{
if (image.getType() == BufferedImage.TYPE_BYTE_BINARY)
{
params.put(ImagingConstants.PARAM_KEY_COMPRESSION,
TiffConstants.TIFF_COMPRESSION_CCITT_GROUP_4);
}
else
{
params.put(ImagingConstants.PARAM_KEY_COMPRESSION,
TiffConstants.TIFF_COMPRESSION_LZW);
}
}
Imaging.writeImage(image, (File) outputStream, imf, params);
{code}
> ImageIoUtil.WriteImage doesn't work with tiff images
> ----------------------------------------------------
>
> Key: PDFBOX-1734
> URL: https://issues.apache.org/jira/browse/PDFBOX-1734
> Project: PDFBox
> Issue Type: Improvement
> Environment: XP, W7
> Reporter: Tilman Hausherr
> Priority: Minor
> Labels: tiff
> Attachments: ImageIOUtil.patch, TestImageIOUtils.patch
>
>
> ImageIoUtil.WriteImage brings an I/O error exception when trying to write a
> tiff file. Debugging shows that the cause is "Bits per sample must be 1 for
> RLE compression!". This means that the compression used (the first one of the
> following list, returned by writerParams.getCompressionTypes() ) is only
> allowed for bitonal images.
> CCITT RLE
> CCITT T.4
> CCITT T.6
> LZW
> JPEG
> ZLib
> PackBits
> Deflate
> EXIF JPEG
> After correcting this, the next problem was that tiff images didn't have the
> proper resolutions. I added that too. Yes it uses the com.sun.* classes;
> however there is no other way. Even apache xmlgraphics uses them, although in
> a very different way than I do
> https://svn.apache.org/repos/asf/xmlgraphics/commons/tags/commons-1_3_1/src/java/org/apache/xmlgraphics/image/writer/imageio/ImageIOTIFFImageWriter.java
> writeImage() has a parameter "int imageType" which is never used. Why?
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
