C++*********************************************************************
C
C $$ FINDMX_Q.FOR
C
C **********************************************************************
C=* FROM: SPIDER - MODULAR IMAGE PROCESSING SYSTEM.   AUTHOR: J.FRANK  *
C=* Copyright (C) 1985-2005  Health Research Inc.                      *
C=*                                                                    *
C=* HEALTH RESEARCH INCORPORATED (HRI),                                *   
C=* ONE UNIVERSITY PLACE, RENSSELAER, NY 12144-3455.                   *
C=*                                                                    *
C=* Email:  spider@wadsworth.org                                       *
C=*                                                                    *
C=* This program is free software; you can redistribute it and/or      *
C=* modify it under the terms of the GNU General Public License as     *
C=* published by the Free Software Foundation; either version 2 of the *
C=* License, or (at your option) any later version.                    *
C=*                                                                    *
C=* This program is distributed in the hope that it will be useful,    *
C=* but WITHOUT ANY WARRANTY; without even the implied warranty of     *
C=* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
C=* General Public License for more details.                           *
C=*                                                                    *
C=* You should have received a copy of the GNU General Public License  *
C=* along with this program; if not, write to the                      *
C=* Free Software Foundation, Inc.,                                    *
C=* 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.      *
C=*                                                                    *
C **********************************************************************
C
C
C IMAGE_PROCESSING_ROUTINE
C
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C--*********************************************************************
C
C $$ FINDMX_Q.FOR
C
         SUBROUTINE  FINDMX_Q(D,LSD,NSAM,NROW,NSI,CMX,SX,SY)
         DIMENSION  D(LSD,NROW),Z(-1:1,-1:1)

         JC=NROW/2+1
         IC=NSAM/2+1
         CMX=D(IC,JC)
         DO    JT=-NSI,NSI
            J=JT+JC
            DO    IT=-NSI,NSI
               I=IT+IC
               IF(CMX.LE.D(I,J))  THEN
                  CMX=D(I,J)
                  IX=I
                  IY=J
               ENDIF
            ENDDO         
         ENDDO
         SX=IX-IC
         SY=IY-JC
         IF(IY.LT.2.OR.IY.GT.NROW-1.OR.IX.LT.2.OR.IX.GT.NSAM-1) RETURN
         DO    J=-1,1
            DO    I=-1,1
               Z(I,J)=D(IX+I,IY+J)
            ENDDO
         ENDDO
         CALL  PARABL(Z,XSH,YSH,CMX)
         SX=SX+XSH
         SY=SY+YSH
         END