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From "prabu (JIRA)" <>
Subject [jira] [Created] (IMAGING-139) Invalid DPI value
Date Thu, 14 Aug 2014 22:02:19 GMT
prabu created IMAGING-139:

             Summary: Invalid DPI value 
                 Key: IMAGING-139
             Project: Commons Imaging
          Issue Type: Bug
          Components: Format: JPEG
    Affects Versions: 0.97
            Reporter: prabu
         Attachments: 250dpi.jpg

I have following code in my java program

final String IMAGE_PATH = "c:\\test\\250dpi.jpg";
byte imageBytes[] = readImageBytes(IMAGE_PATH);

final ImageInfo imageInfo = Sanselan.getImageInfo(imageBytes);
final int physicalWidthDpi = imageInfo.getPhysicalWidthDpi();
final int physicalHeightDpi = imageInfo.getPhysicalHeightDpi();

return physicalHeightDpi);

When i right click image it showing 250 DPI value,but above program returning DPI value -1.

Not sure why?Can u please help how to get image correct DPI value.

Attached image for your reference.

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