scanning

I am having some issues with a PDF containing a rotation property created by a Xerox scanner. The below function was originally created to scale the height of an input PDF by the amount given by the variable scaleHeight. This works fine for input documents without rotation. When testing a document with a 270 degree rotation, I found that the rotation property which would have made the document appear in a portrait orientation was ignored. Instead, the document appeared in a landscape orientation in the output PDF. So I updated the function below to apply the scaling only when there is no

I need to know that different between scanning and taking photo from camera . As example we normally , SCAN QR code , bar code , like thing using android phone.They are also image. we can take photo from camera. it also image. So ,is it Scanning QR code , mean take image and processing it or are there have any special thing take image from pixel values ? Biggest difference is that when you capture an image you get a processed jpg file, when you're scanning you're working with raw YUV byte array. When talking about a picture you usually need to worry about quality, flash, aperture, shutter

I'm writing a simple scanning application using jfreesane and Apache PDFBox . Here is the scanning code: InetAddress address = InetAddress.getByName("192.168.0.17"); SaneSession session = SaneSession.withRemoteSane(address); List<SaneDevice> devices = session.listDevices(); SaneDevice device = devices.get(0); device.open(); device.getOption("resolution").setIntegerValue(300); BufferedImage bimg = device.acquireImage(); File file = new File("test_scan.png"); ImageIO.write(bimg, "png", file); device.close(); And making PDF: PDDocument document = new PDDocument(); float width = bimg.getWidth();

Since Vista, Windows is shipped with WIA 2.0 (wiaaut.dll). According to the following KB article and many of my findings on various forums, duplex scanning is no longer possible using WIA 2.0. Yet, the article mentions the use of native WIA 2.0, what would make duplex scanning possible. ( https://support.microsoft.com/en-us/kb/2709992 ) According to the WIA 2.0 documentation ( https://msdn.microsoft.com/en-us/library/windows/desktop/ms630196(v=vs.85).aspx ), duplex scanning is possible but using the new WIA_IPS_DOCUMENT_HANDLING_SELECT (3088) property. My issues are: I have no idea how to use

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . I know some of you will discourage scanning through a web page, unfortunately, it is a requirement. I want to view my options in the situation, and maybe, some of you may have already gone through this and had a workable solution. Problem is, we need to have a universal approach in scanning documents through the webpage without any external helper apps that does this for us. I know this is a tall