BD1INFO.TXT File
RADIUS Unclassified Data Set
Model Board 1 Data Release V1.1
November 11, 1992

FILE:  BD1INFO.TXT

	(This file has changed since the V-1.0 release.)

	The file BD1GT.DAT contains measured ground truth data for the first 
RADIUS model board.  In order to simplify computer reading of that file, it has 
been formatted as four columns of ASCII text numbers separated by spaces with 
no explanatory text.

	The first column of the file contains a number and an English discription 
of the ground truth measurement points.  The numbers correspond to the 
numbers on the MacDraw diagram inclosed.

	The second, third, and fourth columns contain the x, y, and z coordinates, 
respectively, for the identified ground truth measurement point.  The unit for the 
coordinates is INCHES and is reported AS MEASURED ON THE MODEL 
BOARD.  The model board was constructed to have a scale of 1:500 where one 
inch on the model board represents 500 inches in the simulated scene.  Not all 
specified ground truth points could be successfully measured.  These points do 
have identification numbers in the measured ground truth file but have the x, y, 
and z coordinate columns left blank.