MIMSS -- NRSA MSS Tape to Database Transfer

Transfers image data from LANDSAT MSS-ILES magnetic tape to image database.

Progress of this program can be monitored. See MONITOR section.

This program was specially written to read tapes generated by the National Remote Sensing Agency (NRSA) located at Balanagar, Hyderabad, India. It makes the following assumptions about the tape format:

Tape headers are NOT read, and no error checking is performed to see, if indeed, an MSS format tape is being read. It is up to the user to ensure that input parameters are correct before running.

PARAMETERS

MIMSS is controlled by the following global parameters: 

Name     Prompt                                  Count     Type
FILE     Database File Name                      1-64      Char
MTIC     Mag Tape Input Channel list             1-4       Int
DBOC     Database Output Channel list            1-4       Int
MTIW     Mag Tape Input Window                   4         Int
DBOW     Database Output Window                  0-4       Int

FILE

FILE is the filename of the PCIDSK image database to receive output imagery from MIMSS. The image database must exist prior to running MIMSS and would be created using CIM. The syntax of the filename is system dependent. 

 EASI>FILE="...filename..."

MTIC

MTIC represents a list of image channels that exist on the input magnetic tape: 

 EASI>MTIC=i,j,...,p            | integers, 1-4

DBOC

DBOC represents a list of image channels that reside in the output image database file: 

 EASI>DBOC=i,j,...,p            | integers, 1-4

MTIW

MTIW specifies a rectangular subset of an image on magnetic tape to be used for input to the MIMSS task: 

 EASI>MTIW=Xoffset,Yoffset,Xsize,Ysize
 EASI>MTIW=                     | defaults to entire image
The offset + size must not exceed the image size.

DBOW

DBOW specifies a rectangular subset of the image channels in the output image database file that receives imagery from MIMSS: 

 EASI>DBOW=Xoffset,Yoffset,Xsize,Ysize
 EASI>DBOW=                     | defaults to entire image
The offset + size must not exceed the image size.

DETAILS

MIMSS reads 8-bit image data from Band Interleaved by Line (BIL) LANDSAT MSS-ILES format tapes, generated at NRSA, India.

Image data is transferred from any set of image channels on tape (MTIC) to any set of image channels on the database (DBOC).

Any arbitrary rectangular window on tape (MTIW) can be transferred to any arbitrary window on the file (DBOW). Shrinking and/or zooming is performed if the input window size does not equal the output window size. If the database output window is not specified, it defaults to the entire file. 

 A TAPE MUST BE MOUNTED ON THE TAPE DRIVE BEFORE MIMSS CAN BE RUN.
 CLEANING THE TAPE HEADS IS RECOMMENDED TO MINIMIZE THE CHANCE OF
 TAPE READ ERRORS.

MONITOR

Program progress can be monitored by printing the percentage of completed processing in odometer fashion. A system parameter, MONITOR, controls this activity: 

 EASI>MONITOR="ON"           | turn monitor ON  (default)
 EASI>MONITOR="OFF"          | turn monitor OFF (recommended if
                             | running in batch/background mode)

EXAMPLE

Read 4-band full LANDSAT MSS image from tape to 3584 x 2400 x 4 database file, then transfer to video display: 

 EASI>FILE="MSS"
 EASI>DBSZ=3584,2400
 EASI>DBNC=4
 EASI>RUN CIM                    | create database file
 EASI>MTIC=1,2,3,4               | transfer four bands
 EASI>DBOC=1,2,3,4
 EASI>MTIW=0,0,3584,2400         | input window must be specified
 EASI>DBOW=                      | default the output window
 EASI>RUN MIMSS                  | read tape
 EASI>RUN DCP "ID1,2,3:LZ"       | show images 1,2,3. Zero LUTs
 EASI>DBIC=1,2,3                 | display first three bands
 EASI>VDOC=1,2,3
 EASI>MTIW=
 EASI>VDOW=
 EASI>RUN IVI                    | display overview
 EASI>RUN DCP "LE"               | enhance imagery
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