Microtek ScanMaker 4700 User Manual page 42

Info window
value of 23. Value is calculated by multiplying the percentage by the
constant 255 (value = 255 x percent).
If you choose Percent, the numbers represent the percentage of the
maximum intensity of the pixel. For instance, a G value of 35%
indicates that the sampling size selected has a green color value of
35 percent intensity (out of 100 percent). Percent is calculated by
dividing the constant 255 by the value (percent = 255 ÷ value).
Color Meter Options
This determines the expanse of color information to be made available. For
instance, if you choose 5 x 5 as your sample area, this means your RGB
values will represent color information for a 5-pixel by 5-pixel area. If you
choose 1 x 1, the color information pertains to a single pixel — the one
shown in the middle of the Pixel Display.
Using the Color Output Meter
The Color Output Meter is useful if you wish to adjust the shadow and
highlight points of an image.
As you pass over a point in the image, the Color Output Meter will show
the appropriate RGB values of that point in the image. The significance of
the numbers is explained below.
There are two numbers shown in the Color Output Meter. The first
number represents the raw color data taken by the scanner; the
second number represents the resulting value after color correction
or image enhancement is applied to the image.
The values can be anywhere from 0 to 255, with 0 as the black point,
255 as pure white, and all other values in between corresponds to
shades of varying degrees between black and white.
The values as a whole represent color information for the sample size
selected in the Color Meter Options button (discussed below). 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.
file:///D|/sw56/Info_win_detail.htm (2 of 3) [8/15/03 4:00:45 PM]