Andor Technology iXon Ultra 897 User Manual page 102

You can use the pairs of left-right arrows at either end of the Palette Bar to increase
or decrease the displayed data range (i.e. 'shrink' or 'stretch' the scale on the palette)
and thereby alter the contrast of the data shown in Image Display Mode.
Increasing the displayed
data range ('shrinking' the
scale) decreases the
contrast.
Decreasing the displayed
data range ('stretching'
the scale) increases the
contrast.
Assume your original data are 'rescaled' (see Rescale above).
Data-Axis
Max
To achieve low contrast, the computer scales a larger range of data
with the same number of colors as it used for rescaling. Thus the
Original
Data
Range
original data are represented by a smaller range of colors.
Min
Increasing the displayed data range produces low contrast.
Low Contrast
To achieve high contrast, the computer scales a smaller range of
Data-Axis
data with the same number of colors as it used for rescaling.
Max
Original
Any data value greater than the maximum in the displayed data
Data
Range
Min range is represented by the brightest color (white); any data value
lower than the minimum in the displayed data range is represented
High Contrast
by the darkest color (black).
Increase Displayed
Data Range
Decrease Contrast
DISPLAYING DATA
Increasing and Decreasing Contrast
Decrease Displayed
Data Range
Increase Contrast
High and Low Contrast: Overview
Page 102
Section 4 . 7