User`s manual

112 Microtek ScanWizard Pro for Mac OS X
Color Meter Options
The Color Meter options also let you choose the size of your sample display
area.
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 default), the color information pertains to a single pixel — the
pixel in the middle of the sample area.
Color Meter Options
Sample Size
display, with
3x3 option
shown here
If you select Native color mode as your display, the Color Meter options let
you choose whether you wish to display color information in numbers or
percentages.
• If Val ue is chosen, the numbers represent values in the 0-to-255 pixel scale
regardless of the bit depth of your output image. For instance, an R value of
23 indicates that the sampling size selected has a red color value of 23.
Value is calculated by multiplying the percentage by the constant 255 (value
= 255 x percent).
• If Percent is chosen, the numbers represent percentage of intensity (divided
by 255). For instance, a G value of 35% indicates that the sampling size
selected has a green color value to be 35 percent intense (out of 100
percent). Percent is calculated by dividing the constant 255 by the value
(percent = V/255). For CMYK images, the display is always in Percent.