User Manual

Rasterize pages
Use the 'Rasterize' option for scanned pages that are not detected as scanned pages by the
application.
Question: What happens when I rasterize a page?
Answer: Vector graphics, text documents, et cetera are converted into bitmaps when you
rasterize a page. When an image is rasterized, the quality of the image decreases. Select the
rasterize mode which best describes the pages that you want to rasterize. The best matching
mode generates an optimal rasterize result and preview view.
Question: Why is the preview view of a rasterized page so poor?
Answer: When you rasterize an image you convert the image into a bitmap. For example, you
convert a grayscale vector image. The created bitmap can only contain black and white pixels.
The different shades of gray must be converted using black and white pixels. Dark gray is
represented with more black pixels in a certain area. Light gray is represented with less black
pixels in a certain area. The bitmap in the preview view must be resized to fit the preview
window. Usually the bitmap is decreased and this results in the 'leaving out of pixels' in the
preview view. This results in the poor review quality.
Question: Is the print result of a rasterized page of the same poor quality as the preview view?
Answer: No. The print result is almost the same as a pdf page, as long as you select the correct
rasterize mode for the concerning page(s).
Rasterize one or more pages
You can rasterize pages in the clean-up workflow or directly via option rasterize.
1. Click [Pages] - [Rasterize]. Select which pages you want to rasterize.
When you enter the clean-up workflow, you can rasterize all pages that are not detected as
scanned pages. Select option:
• [Continue scan clean-up with the scanned pages]
One or more of the selected pages are not detected as scanned pages. Select this option to
clean-up only the detected scanned pages.
• [Rasterize]
One or more of the selected pages are not detected as scanned pages. Select this option if
the selected pages are scanned pages, but some are not detected as scanned pages.
2. Select the rasterize mode which best describes the pages that you want to rasterize:
• Black and white
Use this mode for text pages.
• [Grayscale]
Use this mode for text pages that contain grayscale images.
• [Color]
Use this mode for color pages.
3. Select the resolution that is used by your printer. The application becomes slower when you
select a high resolution.
4. Click [OK].
Rasterize pages
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Chapter 4 - The [Pages] workspace
PRISMAprepare v7.1.1