[PDFBOX-3206] Cannot change converted image's DPI

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.0.0
• Component/s: Documentation, Rendering
• Labels: newbie
• Environment: Windows 10, JDK 1.7
• Assignee: Tilman Hausherr
• Reporter: Jae Soon Kim
• Created: 22/Jan/16 10:10
• Updated: 22/Jan/16 15:44
• Resolved: 22/Jan/16 15:44

Description

When i convert pdf to jpg, i use "renderImageWithDPI" and "JPEGFactory.createFromImage".
but DPI doesn't change.

So, How can i change image's DPI in pdfbox 2.0.0
please let me know that.

This is my source.
1. using renderImageWithDPI

PDDocument document = PDDocument.load(sourceFile);
PDFRenderer pdfRenderer = new PDFRenderer(document);
int pageCounter = 0;

for (PDPage page : document.getPages()){ 

     RenderedImage im = pdfRenderer.renderImageWithDPI(pageCounter, Integer.parseInt(convertDPI), ImageType.RGB);

     File f = new File(destinationDir +"/"+saveName+"_"+ String.format("%03d", pageCounter)+"."+convertFormat);

     ImageIO.write(im, convertFormat,f);

     pageCounter++;

}
document.close();

2. using "JPEGFactory.createFormImage"

PDDocument document = PDDocument.load(sourceFile);
PDFRenderer pdfRenderer = new PDFRenderer(document);
int pageCounter = 0;

for (PDPage page : document.getPages()){ 

    BufferedImage image = pdfRenderer.renderImage(pageCounter, 1);
    PDImageXObject pdImage = JPEGFactory.createFromImage(document, image, Float.parseFloat(convertQuality), Integer.parseInt(convertDPI));

    File f = new File(destinationDir +"/"+saveName+"_"+ String.format("%03d", pageCounter)+"."+convertFormat);
    ImageIO.write(pdImage.getImage(), convertFormat,f);
}
document.close();