Tilman Hausherr created PDFBOX-5224:
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Summary: Optimize SampledImageReader.from1Bit()
Key: PDFBOX-5224
URL: https://issues.apache.org/jira/browse/PDFBOX-5224
Project: PDFBox
Issue Type: Improvement
Components: Rendering
Affects Versions: 2.0.24
Reporter: Tilman Hausherr
Assignee: Tilman Hausherr
Fix For: 2.0.25, 3.0.0 PDFBox
{quote}This fixes an issue with a missed logged error + loop breaking if an
erroneous read falls onto a skipped row.
It also improves the speed at least by factor twice (due to sign test instead
of bit masking and boolean flag for subsampling).
It will be even faster with regions, as there was a poor design choice of full
inner loop computations even if x was below startX.
{quote}
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