Question about Pacific Image Powerslide 3650
Scanning of a natural picture handled by an image processing system always causes a loss of information, i.e., the micro picture elements become uncertain and vague. This is essential when the picture is to be used for measuring or evaluation of structural parameters. To make the induced uncertainty and vagueness transparent up to the computed results, specifications and procedures from fuzzy set theory are presented and suggested. In particular, distances of pixels are considered. For a demonstration of how this uncertainty can influence conclusions from the given picture, the computation of the approximate gradient of a curve is considered.
Reasons to change the automatically determined resolution
It is desirable to change the resolution if the destination of the scanned image is an image file or if it is intended for use on the World Wide Web.
When scanning to a file, unlike scanning to a destination program such as Adobe (R) PhotoDeluxe (TM), the intended use for the scan is not necessarily determined. It may be necessary to change the resolution to achieve the desired results. For example:
If selecting Image File or Image and Text File as the destination, and the resulting image is for on-screen use (for example, in a World Wide Web page), change the resolution to 72 to 75 dots-per-inch (dpi). (Resolutions higher than 75 dpi do not improve the appearance of an image displayed on a computer monitor and require longer download times.)
If selecting Image File or Image and Text File as the destination, and the image file is being sent to a printer with a resolution of 1200 dpi or higher, change the resolution to 300 dpi. (Resolutions above 300 dpi rarely improve image quality, even for high-resolution printers.)
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Posted on Jul 02, 2009
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Posted on Jan 02, 2017
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