Tilman Hausherr created PDFBOX-4060:
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Summary: Slow rendering of PDF file with DeviceN jpeg file
Key: PDFBOX-4060
URL: https://issues.apache.org/jira/browse/PDFBOX-4060
Project: PDFBox
Issue Type: Bug
Components: Rendering
Affects Versions: 2.0.8
Reporter: Tilman Hausherr
(File submitted by Soon Keong Tan on the user mailing list)
There is a large jpeg file (5349 x 3806) that uses a DeviceN colorspace which
in turn is based on CMYK. There's some slowness due to the type0 convert
function from DeviceN to CMYK, but this is less than 10%. Most time is from
converting the CMYK to RGB, one pixel at a time. (Because of the DeviceN
colorspace we can't use bulk conversion, which may or may not be faster)
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