problem acquiring two images in a row

[dabd]

I am using morena to acquire two images from a single document.
The problem is that the second image is not acquired at all and the program crashes.

This is the code that I use to acquire the first image. For the second image the code is exactly the same except the frame is set to different coordinates (so I can acquire a different part of the document).

I get the following error:

java.lang.IllegalArgumentException: Width (0) and height (0) must be > 0

on the instruction awtImage.getWidth(null) because the morenaImage has 0 width and height.

I looked at all the methods for TwainSource to find a way to “reset” the source, because it looks like Morena didn’t finish the first job so it is unable to scan the second image, but I couldn’t find a suitable method.

Any tips please?

Thanks.

private static String acquireImg() throws Exception {



String result = null;



TwainSource tsource = getSource();



if (tsource != null) {

tsource.setVisible(false);

try {



tsource.setUnits(TwainConstants.TWUN_PIXELS);

tsource.setPixelType(TwainConstants.TWPT_GRAY);

if ("COLOR".equals(acquireType)) {

tsource.setColorMode();

} else {

tsource.setGrayScaleMode();

}

tsource.setBitDepth(8);

tsource.setResolution(499);



tsource.setFrame(400, 1000, 1400, 1300);

MorenaImage morenaImage = new MorenaImage(tsource);

Image awtImage = Toolkit.getDefaultToolkit().createImage( morenaImage);

BufferedImage image = new BufferedImage(awtImage.getWidth(null), awtImage.getHeight(null), BufferedImage.TYPE_BYTE_BINARY);

image.createGraphics().drawImage(awtImage, 0, 0, null);



result = Base64.encodeBytes(getJPG(image));



} catch (Exception e) {

e.printStackTrace();

}



return result;

} else {

return null;

}

}

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