PDS_VERSION_ID       = PDS3 

RECORD_TYPE          = STREAM
INSTRUMENT_HOST_NAME = "MARS PATHFINDER LANDER"
INSTRUMENT_NAME      = "IMAGER FOR MARS PATHFINDER"
TARGET_NAME          = MARS
OBJECT               = TEXT
  PUBLICATION_DATE   = 2003-02-01
  NOTE               = "Introduction to the IMP 3D Position Data Set"
END_OBJECT           = TEXT
END 
                                                
    IMAGER FOR MARS PATHFINDER STEREO-DERIVED 3D POSITION DATA

Introduction
------------

This data set represents the primary results of three-dimensional
modeling of the Mars Pathfinder landing site using data from the
Imager for Mars Pathfinder (IMP) camera. The data are a set of tables
corresponding to pairs of IMP stereo images. A given table contains
Cartesian (x,y,z) coordinates for each pixel in the stereo pair. More
information about the stereo modeling may be found in the data set
description in the file catalog/dataset.cat. Other files in the
catalog directory contain information about the IMP camera, the
lander, the Mars Pathfinder mission, and references to published
literature.


File Formats
------------

IMP 3D position data are stored in ASCII text files. Each file
contains a table with six columns: image line number, image sample
number, X, Y, and Z coordinates, and pixel value in the original image
(the left side of the stereo pair). Embedded at the beginning of each
file is a PDS label that describes the content and format of the file,
including the starting byte and number of bytes in each column.

The file naming convention is IxxxxxxxxxL_yyyyyyyyyy_3D.TAB where
xxxxxxxxx is the spacecraft clock count and yyyyyyyyyy is the image
ID, taken from the file name of the left image of the original stereo
pair.


Volume Contents
---------------

The IMP 3D position archive includes the following files and
directories.

Root directory
  AAREADME.TXT - the file you are reading
  VOLDESC.CAT  - volume description for the PDS catalog

INDEX directory
  INDXINFO.TXT - description of contents of this directory
  INDEX.TAB    - index of all products in the archive
  INDEX.LBL    - PDS label that describes INDEX.TAB

CATALOG directory
  CATINFO.TXT  - description of contents of this directory
  *.CAT        - descriptions of dataset, instrument, spacecraft,
                 mission, references, and personnel

DATA directory
  *.TAB        - data files

EXTRAS directory
  EXTRINFO.TXT - description of contents of this directory
  *.WRL        - 3-D model files in VRML format
  *.RGB        - texture image files for display with VRML files

Contacts
--------

For questions concerning these data products, contact:

          PDS Geosciences Node
          Washington University
          Dept. of Earth and Planetary Sciences
          1 Brookings Drive
          St. Louis, MO 63130
          314-935-5493

          WWW Site:  http://wwwpds.wustl.edu
          Electronic mail address:  geosci@wunder.wustl.edu