User manual KOFAX VRS3

[. . . ] VirtualReScan® 3. 5 User's Manual 10300409-000 Revision A Copyright Copyright © 2004 Kofax Image Products. The information contained in this document is the property of Kofax Image Products. Neither receipt nor possession hereof confers or transfers any right to reproduce or disclose any part of the contents hereof, without the prior written consent of Kofax Image Products. No patent liability is assumed, however, with respect to the use of the information contained herein. [. . . ] The box is centered on the 50-50 baseline settings for Brightness and Contrast, with the borders representing the Brightness and Contrast threshold values from the VRS Administration Utility dialog box. Valid VRS-detected values must fall within the blue box. VRS detected values that fall outside the blue box borders are invalid and they generate warnings. 46 VRS User's Manual Operating VRS Brightness Text Box When the VRS Interactive Properties dialog is launched, the Brightness numeric text box on the Clarity tab indicates the current Brightness setting. If desired, the Brightness setting may be changed manually using the Brightness numeric text box. Brightness may be set from 0 (very dark) to 100 (very bright) for black and white, grayscale, or color images. Keep in mind, though, that the Manual brightness setting is not shared between black and white, grayscale, and color modes. Changing the value of the manual brightness setting in black and white mode does not affect the value of the manual brightness setting in grayscale or color mode, because VRS keeps these values separate. Contrast Text Box When the VRS Interactive Properties dialog is launched, the Contrast numeric text box indicates the current value of the Contrast setting. The Contrast value of an image may be set manually using the Contrast numeric text box. The Contrast value may be set from 0 (very low contrast) to 100 (very high contrast). Similar to the Brightness setting, the Contrast setting is not shared between black and white, grayscale, and color modes. You must enter a separate Contrast value for each mode. Gamma Slider and Gamma Correct Text Box The Gamma slider and Gamma numeric text box indicate the current value of the Gamma setting, which can range from -100 (very dark gamma) to +100 (very light gamma). Gamma may be set for black and white, grayscale, and color images, but is only shared between black and white and grayscale modes. This means that changing the value of the Gamma setting while in black and white mode also changes the Gamma setting for grayscale mode because VRS internally uses a single value to represent gamma for black and white and grayscale. The Gamma setting is not shared between non-color and color modes, however. Changing the value of the Gamma setting in black and white mode does not affect the value of the Gamma setting in color as VRS uses a dedicated value to represent color gamma. To update the Clarity tab settings 1 From the VRS Interactive Properties dialog box, select the Clarity tab. a To adjust the contrast and brightness at the same time, click within the boundaries of the brightness/contrast grid, then insert the pointer so that the intersection of the crosshairs represents the desired values for brightness and contrast. For best results, stay within the blue rectangle. b To adjust the contrast and brightness separately, skip to the next step. VRS User's Manual 47 Chapter 2 2 In the Brightness text box, VRS displays the current brightness setting. To change the setting, do one of the following: · Click the arrows on the Brightness text box to increase or decrease the brightness level. [. . . ] · Black & White: Image is processed in black and white, regardless of the results of the color detection process. · Automatic: Image color is processed according to the results of the color detection process. 11 If you make adjustments that you do not want to save, click Reset to clear them and restore the default values. 12 When you are satisfied with the new Color tab settings, click OK. [. . . ]