Hello,
thanks for the answers! I work only Monday and Tuesday. Therefore my late
answer.
I added the following code to my application. (trying to use
JBIG2-Image-Decoder)
org.jpedal.jbig2.jai.JBIG2ImageReaderSpi imageReaderSpi = new
org.jpedal.jbig2.jai.JBIG2ImageReaderSpi();
System.out.println("test = " + imageReaderSpi.getFormatNames()[0]);
for (int i = 0; i < readerFormatNames.length; i++) {
System.out.println("readerFormatName " + i + " = " +
readerFormatNames[i]);
}
It printed on the console:
test = JBIG2
readerFormatName 0 = raw
readerFormatName 1 = tif
readerFormatName 2 = jpeg
readerFormatName 3 = WBMP
readerFormatName 4 = pcx
readerFormatName 5 = PNM
readerFormatName 6 = JPG
readerFormatName 7 = wbmp
readerFormatName 8 = PNG
readerFormatName 9 = JPEG
readerFormatName 10 = jpeg 2000
readerFormatName 11 = tiff
readerFormatName 12 = BMP
readerFormatName 13 = JPEG2000
readerFormatName 14 = RAW
readerFormatName 15 = jpeg2000
readerFormatName 16 = GIF
readerFormatName 17 = TIF
readerFormatName 18 = TIFF
readerFormatName 19 = jpg
readerFormatName 20 = bmp
readerFormatName 21 = PCX
readerFormatName 22 = pnm
readerFormatName 23 = png
readerFormatName 24 = gif
readerFormatName 25 = JPEG 2000
My interpretation: The compiler finds org.jpedal.jbig2.jai.JBIG2ImageReaderSpi.
However, it does not realize, that there is an ImageReader ...
Regards
Felix
> On 10 Mar 2016, at 13:40, Tilman Hausherr <[email protected]> wrote:
>
> Am 10.03.2016 um 22:10 schrieb John Hewson:
>>> On 9 Mar 2016, at 06:11, Felix Hermann <[email protected]> wrote:
>>>
>>> Hello,
>>> we use PDFBox 2.0.0 for converting PDF to images.
>>> We also want to support JBIG2 images. Therefore we would like to
>>> use the JBIG2-Image-Decoder, which is proposed on your website. (See:
>>> https://pdfbox.apache.org/2.0/dependencies.html[https://pdfbox.apache.org/2.0/dependencies.html]
>>> ) On your website it says: "These libraries are optional and will be
>>> loaded if present on the classpath, otherwise support for these image
>>> formats will be disable and a warning will be logged when an unsupported
>>> image is encountered."
>>> I downloaded the source code, created a jar-file and put it onto the
>>>classpath.
>>> However it didn't work. I'm getting the following error:
>>> [09.03.2016 14:37:59] ERROR
>>> org.apache.pdfbox.contentstream.PDFStreamEngine (PDFStreamEngine.java:851)
>>> - Cannot read JBIG2 image: jbig2-imageio is not installed I also tried
>>> 'JBIG2 ImageIO' by 'levigo'. This worked. However we cannot use it, as it
>>> is under the GPL-Licence.
>> That’s interesting, could you add some code to your application to dump the
>> value of:
>>
>> ImageIO.getReaderFormatNames()
>>
>> Make sure you do this in the problem code, with the appropriate classpath.
>> Let me know the result.
>
> If I understood him correctly, it is a license problem, not a rendering
> problem.
My understanding was that the problem is that PDFBox can’t find
"JBIG2-Image-Decoder”, even when it’s on the class path, but that "JBIG2
ImageIO” has no such problem.
— John
> Tilman
>
>
>>
>> — John
>>
>>> Any help will be appreciated
>>> Regards
>>> Felix
>>>
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