Microtek ScanMaker 5 Guide de l'utilisateur télécharger pdf (Page 153)

Reference: The Information Window 6-75

Sample size button

The Sample Size button lets you choose how extensively the color information

will be read — whether it will apply to a single pixel or an averaged area.

Clicking the Sample Size button displays the sample size. The values as a whole

represent color information for the sample size selected in the Sample Size

button. For instance, if you chose 3 x 3 as your sample size and your R value

reads 23, that shows your red value of 23 is the average of a 3-pixel by 3-pixel

area.

Pixel-value information is useful when you are making image corrections based

on color values. Knowing this, you can modify the White and Black points of an

image, then come back to the same point in the image, and verify through the

output value that the image type values have indeed changed.

Using the Pixel Display

The Pixel Display helps you see how color pixels are organized and distributed.

The display can then help you make an informed judgment on how best to

modify image characteristics such as White and Black points, it also allows you

to verify any changes you have made.

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Microtek ScanMaker 5 Guide de l'utilisateur Page 153