An open-source implementation of NASA's 'NASAView'. The purpose of this program is provide a ported command line version of the decompression in order to allow others to view the historic planetary images.

Dislaimer: The content in archive is for reference only. Please refer to the license specifically in those source files.

Reason: Whilst NASA's 'NASAView' is currently open to the public to be used for image conversion, it's possible it will not be forever. It's also closed source, meaning you can't entirely be sure of what you are running. By writing an open source Java implementation, all machines with a JVM should be able to run the program and perform bug-fixes/extensions where required.

State

v1.1 (latest) is able to process the entirety of Volume 4 and produced a full (or partial image in the case of corrupted data) for all images.

In the future it is planned to introduce the following:

• Front-End GUI
• Decode and Handle Unknown Records
• Attempt Recovery From Corruption

Building

You'll need Java 7 or above and Apache Ant. Then you can simply run:

ant

You should see BUILD SUCCESSFUL if all went well.

Example Usage

The following is an example of how to convert an IMQ Voyager image to a PNG with engineering information:

java -jar dist/openview.jar -i archive/images/c3495731.imq -o saturn.png -f json

JSON output from the above command (saturn.png.txt):

{
  "LABEL_RECORDS":"54",
  "SPACECRAFT_NAME":"VOYAGER_1",
  "SCAN_MODE_ID":"\'3:1\'",
  "EDIT_MODE_ID":"\'1:1\'",
  "NJPL1I00PDS100000000":"SFDU_LABEL",
  "SHUTTER_MODE_ID":"WAONLY",
  "^IMAGE":"61",
  "EXPOSURE_DURATION":"2.8800 <SECONDS>",
  "RECORD_BYTES":"836",
  "IMAGE_NUMBER":"34957.31",
  "IMAGE":{
    "LINE_SAMPLES":"800",
    "SAMPLE_TYPE":"UNSIGNED_INTEGER",
    "LINE_SUFFIX_BYTES":"36",
    "LINES":"800",
    "SAMPLE_BIT_MASK":"2#11111111#",
    "ENCODING_TYPE":"HUFFMAN_FIRST_DIFFERENCE",
    "^LINE_SUFFIX_STRUCTURE":"\'LINESUFX.LBL\'",
    "SAMPLE_BITS":"8"
  },
  "^IMAGE_HISTOGRAM":"55",
  "INSTRUMENT_NAME":"WIDE_ANGLE_CAMERA",
  "NOTE":"\"WA MOSAIC OF EAST ANSA\"",
  "FILTER_NUMBER":"2",
  "IMAGE_HISTOGRAM":{
    "ITEM_TYPE":"VAX_INTEGER",
    "ITEM_BITS":"32",
    "ITEMS":"256"
  },
  "GAIN_MODE_ID":"LOW",
  "TARGET_NAME":"S_RINGS",
  "ENCODING_HISTOGRAM":{
    "ITEM_TYPE":"VAX_INTEGER",
    "ITEM_BITS":"32",
    "ITEMS":"511"
  },
  "MISSION_PHASE_NAME":"SATURN_ENCOUNTER",
  "^ENCODING_HISTOGRAM":"57",
  "FILE_RECORDS":"860",
  "^ENGINEERING_TABLE":"60",
  "EARTH_RECEIVED_TIME":"1980-11-13T11:58:56Z",
  "RECORD_TYPE":"VARIABLE_LENGTH",
  "IMAGE_ID":"\'0815S1+000\'",
  "FILTER_NAME":"CLEAR",
  "IMAGE_TIME":"1980-11-13T10:34:10Z",
  "ENGINEERING_TABLE":{
    "^STRUCTURE":"\'ENGTAB.LBL\'",
    "BYTES":"242"
  }
}