Triton Perspective - Manual (Page 162)

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Gamma: Gamma is a way of logarithmically compensating for low intensity pixels
that may be present in some images. Sliding the bar to the right increases the
gamma index for the image (maximum gamma = +10); sliding it to the left
decreases it (minimum gamma = +0.10). The value +1.00 represents
midpoint of the scale (no gamma).
Brightness: Sliding the bar to the right brightens the image; sliding it to the left darkens
it. When the bar is at the midpoint (+0%), the image has neutral brightness
(no change in brightness). Range is -100% (dimmest) to +100% (brightest).
Contrast: Sliding the bar to the right increases the image’s contrast; sliding it to the
left decreases it. When the bar is at the midpoint (+0%), the image has
neutral contrast (no change in contrast). Range is -100% (least contrast) to
+100% (most contrast).
Viewing options in the lower right portion of the window allow the user to toggle on/off the
bottom tracking results; compress the sidescan file to fit in the window or playback controls
to move through the data file if not compressed. Options include:
Show Bottom Track: Toggles on and off the display of the bottom track line in the data
view.
Compress: If selected, this will compress the entire sidescan data file to fit horizontally
across the 'Bottom Tracking Tool' window. If this is not selected, the window controls below
the 'Compress' check box become available for stepping through the data file as shown
below:
Slider Bar - Sets the amount of overlap between steps.
Playback Controls - Allows the user to move to the
beginning of the file, step forward, step
backwards, or go to the end of the data file.
There are three final options in this window: