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Look--Up Tables

  Look--up tables or LUTs are the tables that map the data in the image memory into colours on the display when the system is used in pseudo--colour mode. Commands exist to load LUTs into the image display, to modify LUTs interactively and to read back LUTs from the image display. Interactive modification is done via the joystick or trackball device.

Some of the existing LUTs are:

backgr
color
heat
light
pastel
pseudo1, pseudo2
rainbow, rainbow1 ... rainbow4
random, random1 ... random4
smooth
staircase
stairs8

Use the command TUTORIAL/LUT to see what some of the available LUTs actually look like and how to modify the LUTs interactively.
The main commands available for handling LUTs are:

LOAD/LUT - load a look--up table
GET/LUT - read back a look--up table
MODIFY/LUT - interactively modify a look--up table
CLEAR/LUT - bypass the look--up table
SET/LUT - pass through a look--up table
DISPLAY/LUT - show the look--up table as a colour bar
CREATE/LUT - create a look--up table using the HSI colour model



Rein Warmels
Mon Jan 22 12:06:29 MET 1996