More about simulate IR imaging.

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JAVIER CASTELLAR (giraffe.asd.sgi.com!sgi.sgi.com!relay.sgi.com!eurohub.neu.sgi.com!sgimad!luna.maJAVIER CASTELLAR)
Thu, 18 Nov 1993 22:56:22 -0800

If you wish to simulate a complete IR scene you should include a quantization
effects on the IR sensors. Some types of IR sensors are using only a few bits
per pixel in a non linear distribution across the IR signal. You can emulate
this fine tune effect with a very simple callback to GL, just using the GL cmask
call at your choice:
        RGBwritemask( Rmask, Gmask, Bmask) or writemask(color_map_mask)
You can force to be aliased at any spectrum just turning off the bits which you
wish on each component or color map( 0xFF will be without dicretization effect,
0xF0 will have a strong quantization effect ... etc).

We have used it to match a real bad IR sensor and the final result is very
similar to the real. (TOW IR sensors)

Hope to help.

                                                Javier Castellar
                                        javier++at++madrid.sgi.com
                                        "I like my guru's watch...."

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