Zone processing | Some applications have a requirement to store part of an image in color |
| or grayscale and the rest of the image in black and white format (this |
| saves storage space by not storing the entire image in color or |
| grayscale). Zone processing is a fixed crop window (the zone) located |
| relative to the upper left corner of a document. It allows the operator to |
| select via the host application an area on the document to be delivered |
| in color, grayscale or black and white format (a separate window for |
| both black and white and color/grayscale may be defined). Different |
| zones may be selected for both the front and back of the image. |
| This feature may be used in conjunction with auto cropping. |
| Following is an example of producing a color zone. |
Original
Black and white image | Relative |
| Cropping |
1.Prepare documents.
2.Start the scanner to do dual stream simplex scanning (front black and white and front color).
3.Setup the scanner to retrieve black and white images first.
4.Setup front black and white to be auto cropping.
5.Setup front color to be relative cropping.
6.Enable the scanner and start polling.
Loop
Read front black and white image header
Read back black and white image (will return full image)
Read front color image header
Read back color image (will return only the color zone)
End loop
