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https://issues.apache.org/jira/browse/PDFBOX-2917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14682167#comment-14682167
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Tilman Hausherr commented on PDFBOX-2917:
-----------------------------------------
I compared three files by rendering them with the two methods I mentioned. They
are identical.
I also did a benchmark on two files:
Porsche file: 1'45" with drawImage, 1'51" with get/setRGB
Pepsi file: 19' with both.
I favor the drawImage method because the other method kindof looks like "newbie
code".
A possible alternative would be the "big" get/setRGB method, but I couldn't
find good information about the scanStride parameter.
> PDF to Image, faint/dim Images
> ------------------------------
>
> Key: PDFBOX-2917
> URL: https://issues.apache.org/jira/browse/PDFBOX-2917
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.0
> Environment: Windows 8.1, jdk1.8.0_51, jre1.8.0_51
> Reporter: Samuil Goranov
> Priority: Trivial
> Labels: images, newbie
> Attachments: PDFBOX-2917-v2.patch,
> PDFBOX-2917__Use_linear_RGB_for_image_color_conversion_to_workaround_JDK_bug.patch,
> saved0.png, screenshot-1.png, selection.pdf
>
>
> {code:title=pdftoimage.java|borderStyle=solid}
> PDDocument document = null;
> File file = new File("F:\\Projects\\java\\pdfbox\\complete.pdf");
> document = PDDocument.load( file );
> try {
> // retrieve image
> BufferedImage bi = new PDFRenderer(document).renderImageWithDPI(
> 0 , 150, ImageType.RGB );
> File outputfile = new File("saved0.png");
> ImageIO.write(bi, "png", outputfile);
> } catch (IOException e) {
> }
> {code}
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