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Scanning in Document Console: What is Scanning? |
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Subtopics within Scanning In Document Console: What
is Scanning? | Scanner
Resolution | Image
Processing
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Scanning an image is like
taking a picture of it with a camera. Instead of natural light or a flash,
the scanner has a light source and lens that expose the image on the scanner
glass. Instead of having light-sensitive film that is exposed, the scanner
software and A&L
Document Console make use of the computer's capabilities to
digitize documents as electronic images and electronically store them.
And just like your camera has settings to be adjusted depending on the conditions, so does your scanner. (Defaults will work in many or even most situations, but not all.) So scanner software lets you choose from different settings, although many tasks are automatic and simply require the click of the mouse on a selected button. However, unlike a camera, scanner software lets you alter the information from the document or image before it is stored in the computer or placed into an application. So, you can enlarge or reduce the size of the image, change the contrast and brightness, and otherwise enhance the picture so that your final result may appear even better than the original. During the scanning process, the scanner applies a light source to your image. The light is reflected back from the image into the scanner optics where the varying levels and intensities of light are interpreted. Your image is then reconstructed digitally and displayed on the screen. In A&L Document Console, manual use of the scanner is optional. The software does provide the user with a few options, which can be used for the majority of scans. Manual scans should only be attempted by experienced users. Before attempting a manual scan, please see your scanner manual for details that will affect the appearance of your image. See image type (drawings, halftones, and photos), automatic exposure, highlights and shadows, tone and color adjustments, resolution and file size, file formats, calibration and more. Image Types: Drawing, Photo and Halftones The drawing image type is used for scanning images with large areas of a single color. Line art, logos, and solid color images are examples of images scanned with a Drawing image type. The color of grayscale variation in an image is captured pixel-by-pixel when a photo image type is used. Use the Photo image type to scan images that will be printed or displayed on typesetters, printers, image-setters and/or color screens. Halftones are used to optimize the quality of scanned photos when printed on desktop printers. Images scanned as a halftone image type are processed in a way that simulates the many shades of gray or color in the original. The halftone process is sometimes needed for images printed on desktop printers that only print a small range of gray colors. (Pictures from magazines, books and newspapers are examples.) |
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Document
Console Introduction | Document
Console - In Depth | Document
Handling
The Query Function | The Document Console Interface | Scanning In Document Console |