[PDFBOX-2258] Speed up SampledImageReader#getStencilImage()

• Type: Wish
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.0.0
• Component/s: Rendering
• Labels: optimization
• Assignee: Unassigned
• Reporter: Simon Steiner
• Created: 05/Aug/14 13:53
• Updated: 20/Apr/17 16:16
• Resolved: 20/Apr/17 16:16

Description

PDF from PDFBOX-1437
java -jar ~/pdfbox_th/app/target/pdfbox-app-2.0.0-SNAPSHOT.jar PDFToImage AA.pdf

org.apache.pdfbox.pdmodel.graphics.color.PDDeviceGray.toRGBImage() 31.69913 11,472 ms (31.7%) 11,472 ms
org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.getStencilImage() 29.439924 10,654 ms (29.4%) 10,654 ms

is there some alternative to
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)

{ op }

}

Issue Links

• is duplicated by: PDFBOX-3763 Optimize SampledImageReader.getStencilImage()