The options in the Kodak Image Quality tab apply specifically to Kodak scanners. For more information, consult your Kodak scanner manual.
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On the Scanner Settings window(see Scanner Settings Overview), click the Kodak Image
Quality tab.
- Select a Scan Mode.
- To override the predefined Kodak scan modes, select the Override Scan Mode Values check box.
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Select an option from the Noise Filter list.
The noise filter reduces random noise on bitonal images by converting a black pixel surrounded by white pixels to a white pixel, and by converting a white pixel surrounded by black pixels to a black pixel. Use the noise filter to increase the compression ratio and improve the appearance of document images. Do not use a noise filter when scanning documents that contain fine lines and small details. Doing so could cause some information to be lost. Do not use the noise filter when scanning documents with text smaller than seven-point type.
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In the Contrast field, enter the contrast level to be detected.
A high contrast produces a scanned output of mostly blacks and whites (only large changes in gray levels are detected). A low contrast value produces a scanned output of mostly midtones (more subtle changes in gray levels are detected). A high contrast is recommended to optimize the text quality.
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In the Threshold field, enter a number from 1 to 255.
A low threshold value produces a lighter image and can be used to subdue backgrounds. A high threshold value produces a darker image and can be used to help pick up faint images.
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Select an option from the Screening (Dither Pattern) list to simulate shades of gray.
Screening is defined by levels of gray. The levels range from 2-level (least amount of gray simulation) to 64-level (greatest amount of gray simulation).
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Select an option from the Alternative Adaptive Threshold list.
Thresholding is used to convert gray scale images into a bitonal/tonal (1 bit/pixel) image. The image is created using the adaptive threshold where the scan contrast is varied, but the threshold is determined using the surrounding 24 pixels.
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Select an Image Enhancement Filter to improve overall image quality. Options include:
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No Filter/All Pass
Use when enhancement to an image is unnecessary or when Adaptive Thresholding (ATP) is used.
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Screen Removal/Low Pass
Use to enhance images containing dot matrix text or images with shaded or colored backgrounds printed using halftone windows. This filter reduces background noise.
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Text/Band Pass
Use to enhance text in an image. This filter is typically used when scanning documents that contain only textual information. This filter reduces background noise.
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Fine Line/High Pass
Use to accentuate the fine details of an image. This filter is typically used to enhance the detail contained in a contiguous tone image, such as a photograph or an image that contains small print. This filter may inadvertently accentuate background noise.
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To create microfiche from the scanned image, select the Film Mode Only (No Images) check box.
Kodak IL 990 scanners can use CAPTUREit to create microfilm without performing import functions.
- To detect and crop document borders and output the actual size of the area that was scanned, select the Auto Crop check box.
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Select the Skew Correct check box, if needed.
The image manager provides skew detection and correction. Skew detection can detect up to a 45-degree skew and correct up to a 24-degree skew angle at 200 dpi or a 10-degree skew angle at 300 dpi. When a skewed document is detected, the image manager corrects skew to within ±0.3 degrees of the document's leading edge. For skew detection and correction to work properly, the leading edge of the document should be straight and intact and the document should be orthogonal.
For best results, use both skew correction and auto cropping. Skew correction occurs prior to auto cropping.
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To fill the area outside of the document edges with a white background, select the Border Reduction check box.
Note:
The border reduction feature only works when the Auto Crop check box is cleared.
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To allow the scanner to dynamically evaluate each document and determine the optimal threshold value, select the Activate Perfect Page iThresholding check box.
This allows scanning of mixed document sets with varying quality, such as those with faint text, shaded backgrounds, or color backgrounds to be scanned using a single setting, thus reducing the need for document sorting.
- Click OK.