Help for CONCOMP

PURPOSE:
concomp uses connectivity defined by adjacency (not diagonal) of pixels
to turn an image into a connected component image.  Each connected
component receives a unique pixel number.  The input and output must be
halfword.

The highest numbered component can be output to a tcl variable named
LASTCMP.  The component numbering can also be started at a user selected
number with the parm STARTCMP.

EXECUTION:

Example

concomp A (B,WORK)      The image A will be turned into connected 
                        components in image B.  The WORK image is
                        needed for calcualtions and can be deleted.
                               
OPERATION:



TIMING: 

As fast as VICAR can read and write the lines.  

 ORIGINAL PROGRAMMER:    A. Zobrist          05 Nov 2004
 COGNIZANT PROGRAMMER:   A. Zobrist          05 Nov 2004
 
 REVISION HISTORY
  2004/05/11 AZ Initial version
  2007/12/28 WB switched to USES_ANSI_C AND LIB_CARTO; misc cleanup
  2014/07/03 WB increased component limit to 20000000; moved coin, join from stack to heap