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Processing Images without Positioning
| Processing Images without Positioning
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| In simple mode, subimage positioning is turned off. In this case, no page detection will be performed, and the image processor will not align the subimage. In fact, there is no subimage at all.
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| Originally, PPP was designed for page detection and most users will usually use PPP in the positioning mode. However, PPP is a batch processor capable of processing a large number of images in the background. Sometimes you only need to perform simple operations on your images. For example, if you want to rotate all your images, or cut the black edges from all your images, you can use PPP to do this task as well. Just turn off the positioning mode and you will get a very simple image processor that performs simple operations on a large number of images.
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| To turn off positioning mode, uncheck the Page content detection check box on the Page Setup page of the Main window.
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| In simple mode, you specify the following parameters:
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| · | Canvas size and orientation
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| The Offset settings are special parameters valid only in simple mode. They are located on the Margin Setup page. If you specify an offset, you can shift the input image on the output canvas. The Offset is a vector consisting of an X and a Y component. Both components are relative to the top-left corner of the output canvas and can be positive, negative or 0. Zero means no shift at all. Use the offset parameters to shift the input image or to cut the sides of the input image. This is the equivalent of the "cropping" function.
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| Consider the following example. You have an input image of size 1000x2000 pixels. You would like to cut 100 pixels on the left and 200 pixels on the right. In this case, you would set up a new canvas size of 700x2000 pixels, and an offset of X = -100, Y = 0.
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| Note that this image cut function differs from the edge cleanup function. Edge cleanup does not really crop the input image, it just removes the non-white pixels, without changing the image size. So if you want to perform a real crop on your images, do not use edge cleanup. Instead, use the output canvas size and the offset parameters together.
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| There are two different offset modes. In simple offset mode, the same offset will be applied to all images. In odd-even offset mode, different offset coordinates will be used for the odd and even pages.
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| The odd-even offset mode also affects the Edge cleanup parameters. Different values can be specified for the odd and the even pages in this mode.
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| Operations performed by the image processor on each image in simple mode:
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| 1. | Check output file. Checks if the output file exists. If it exists and report mode is selected, sends the image to the Exception List.
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| 2. | Odd or even page. Determines if the image is odd or even and selects the appropriate offset parameters.
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| 3. | Turn the image. If page rotation is on, turns the image to the specified degrees (90, -90, or 180 degrees).
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| 4. | Edge cleanup and deskew. If edge cleanup or deskew is selected, performs it. If both of them are selected, performs them in the specified order.
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| 5. | Despeckle. If despeckle is selected, performs the despeckle.
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| 6. | Offset. Creates a new canvas of the specified size and shifts it if the offset is non-zero.
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| 7. | Save. Saves the output image.
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| By the nature of the simple mode, the Exception List will only show files which have serious problems, such as corrupted images, or images that can not be opened. Otherwise, all files will be approved as good files. Be sure to use simple mode only if your images are known to be of good quality.
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© 1998-2002 ELAN GMK
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