Copyright: © 1995-1996 Corel Corporation. All rights reserved.
Citation: © 1995-1996 Corel Corporation. All rights reserved.


Color Page


Changes the brightness of colors in the scanned image. If you find that the colors in a image are too dark or too light, you can change the intensity to balance the final image.


Changes the balance of highlights and shadows in the image.


Enable to convert images to negatives.


Enables the automatic background feature. This feature automatically controls the threshold for black and white images. Threshold determines the minimum amount of color that a dot must have to be defined as black. When a dot from an image is scanned, it is compared to the Threshold value to determines whether it is black or white.

When this option is active, the Contrast and Intensity settings have no effect on the image. As well, this option only effects black and white line art images. It has no effect on scans with any other color settings.


These filters are used to help maintain image's quality when scaling. Use the Auto filter to have the scanner automatically select the most suitable filter to use for a scan.


Returns all the slider bars to their original positions of 128.


Sets all the slider bars to their last stored positions. The positions of the slider bars are stored each time you exit from Corel TWAIN.


Forces Corel TWAIN to scan the SCSI bus for supported scanners. This button is useful if a new scanner is attached to the system, or if the existing scanner is reconfigured to a different SCSI ID.


Making image adjustments


Overview: Adjusting images
Adjusting images

The Color page lets you modify the brightness, and contrast of the scanned image. Changes to these settings affect both the final scan and preview image.

When the Inverse Image option is enabled, images are scanned using negative values. The option produces negative black and white or color images.

The Auto Background option enables the automatic background feature. The feature automatically controls the threshold setting for black and white images. Threshold determines the minimum amount of color that a dot must have to be defined as black. When a dot from an image is scanned, it is compared to the Threshold value to determines whether it is black or white.

The Filter option box lets you select a filter to use to smooth images. These filters will help maintain image quality when scaling. If you select the Auto option, the scanner will automatically select the most suitable filter to apply to an image.

The Intensity slider bar lets you adjust the intensity of colors in the image. The Contrast slider bar lets you adjust the balance of shadows and highlights in the scan. Higher values produce brighter colors and lower values darken colors.

Default restores the sliders to their default values of 128, and Restore resets all the slider bars to their last stored positions. The positions of the slider bars are stored each time you exit from Corel TWAIN.


Creating negative images

1.	Choose the Color page.

2.	Enable the Inverse Image option.

3.	Click Prescan to see the result of your changes.

 Related Topics


Adjusting threshold for black and white images

1.	Choose the Color page.

2.	Enable the Automatic Background option. The scanner automatically selects the best threshold value for the image.

3.	Click Prescan to see the result of your changes.

 Related Topics


Adjusting intensity and contrast

1.	Choose the Color page.

2.	Set the Intensity and Contrast sliders to the desired values. Intensity controls the brightness of colors in an image. Contrast controls the balance of shadows and highlights in an image.

3.	Click Prescan to see the result of your changes.

 Related Topics