Generates tie points and residual values for the overlapping edges of the two input frames
Generates tie points and residual values for the overlapping edges of the two input frames.
- FROMFRAM
- From frame number. The frame number of the first image to be correlated.
- TOFRAM
- To frame number. The frame number of the second image to be correlated.
- BAND
- Band number. The band number of the two input frames that are being correlated.
- TVAL1
- First tie point values. Three tie points in the first input frame. The number of values specified in TVAL1 and TVAL2 must be equal.
- TVAL2
- Second tie point values. Three corresponding tie points in the second input frame. The number of values in TVAL1 and TVAL2 must be equal.
- STRSSIZ(64)
- Starting search size. The initial size of the search area in the first input frame. The maximum starting size is 128.
- MINSSIZ(50)
- Minimum search size. The size to which the search area could be reduced upon successful matching.
- PNTINC(200)
- Point increment. Spacing to be followed along the cutline.
- DELFLG(YES)
- Delete flag. Specifies whether or not the temporary files should be deleted upon completing the procedure.
= YES: Delete temporary files. = NO: Do not deleted temporary files.
- PRINT(TERM)
- Output destination. The destination of the output.
= TERM: Terminal. Output is sent to the user's terminal. = LP: Line printer. Output is sent to the printer defined by $PRINTER. = Filename: User-supplied filename. Output is sent to the user-supplied file with the extension ".prt".
Assuming that the LAMS global $IMAGE = ("US1","US2"), tie points and residual values for the overlapping edges of these two frames are generated and put in the US1.GCP and US2.GCP files.
The procedure begins by setting up local file names of the images, cutline files, and ground control point (GCP) files for the current input frames. Tie points are determined using PICMATCH to correlate the frames. First, the PICMATCH is done along the cutline of the second frame, and this is followed by a PICMATCH along the cutline of the first frame. The results of each PICMATCH are then loaded into IBIS tabular files. Next, the from frame number, to frame number, active flag, constant for least squares, and a unique point number are also loaded into each file. The two IBIS files are then concatenated into a single IBIS tabular file and the zero fill is removed. A linear least squares fit is performed (1) between the FROMFRAM line and TOFRAM line locations and (2) between the FROMFRAM sample and TOFRAM sample locations of the tie points to obtain the residual errors. The delta Z values are also computed. These new tie points and associated data are concatenated at the end of the existing GCP files. Finally, if specified, the temporary files are deleted. Error Messages: Error messages are displayed from the called routines.User Notes:
- Any changes made to the routines PICMATCH, MGR2MTB, MF, CATFILE, COPYFILE, ROWOP, LSQMTB, CMCOPY, CMRENAME, and CMDEL may affect the operation of this routine.
- Related Large Area Mosaicking System (LAMS) procedure functions include MCTP, MCUT, MEDIT, MCRN, MAVE, MGRID, MGMAP, and MRAD.