Hi Frank,
The problem is caused by lack of support for dithering when converting
to B+W output. This is mentioned in the documentation at [1]
Thanks,
Chris
[1] http://xmlgraphics.apache.org/fop/trunk/output.html#bitmap
On 15/01/2014 18:10, Frank B wrote:
I'm creating a barcode using barcode4j. The barcode is sourrounded by a dashed
border. When generating an image using BufferedImage.TYPE_INT_RGB or
BufferedImage.TYPE_BYTE_GRAY, the border is rendered properly. However, when
using BufferedImage.TYPE_BYTE_BINARY, the border is broken. It renders properly
for PDF output.
I attached sample code and the generated PNGs. The rendering issue doesn't
depend on the image type. The same issue occurs for a TIFF output with
TIFFConstants.COMPRESSION_CCITT_T6 and BufferedImage.TYPE_BYTE_BINARY.
- TYPE_BYTE_BINARY.png: how the broken border looks like.
- TYPE_BYTE_GRAY.png: what it should look like.
- TYPE_INT_RGB_details.png: shows how the dashed border is generated. It uses
svg and diagonal bars that clip the border.
- TYPE_BYTE_BINARY_details.png: how the svg is rendered. The diagonal bars are
vertical.
I tested with fop versions 1.0 and 1.1.
Any assistance would be appreciated.
cheers,
frank
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