• I have used RedHat since 1999, then Ubuntu since 2005 for developing this 4SM application.
• For displaying images, since 2005 I depend on OpenEV
  • this is a 32 bits executable, orphaned since 2005.
  • it used to be extremely easy to install and handy to run on 32 bits Ubuntu install, then on 64 bits Ubuntu install, then a few years ago OpenEV became unstable and impossible to install
  • on a 64 bits install, OpenEV can't access required resources and fails to open to satisfaction
• Three years ago, I installed Oracle VM on a ASUS STRIX WIN10 super gaming laptop, COREI7, 8 GB RAM, 17", then Ubuntu 16LTS 32 bits: OpenEV was back to life
• I really need the computing power for my satellite image processing
• At this stage, I am stuck in Tahiti, French Polynesia: 
• I must choose between 
  • a new ASUS STRIX 17" gaming laptop from NewZealand, 
  • a ORYX PRO 17" from System76, 
  • or maybe a MacBook PRO 16" from local vendor
• Then install OracleVM, then Ubuntu 16LTS 32 bits, then OpenEV

• Did I miss something?
• I really need OpenEV (FWtools Linux 32 bits) and the computing power of a lightweight portable gaming machine for my satellite image processing
• Can you suggest a solution by your team:
  • you arrange to install OpenEV on a 64 bits ORYX PRO 17"
  • I gather this might require installing the 15 years old resources (PYTHON and/or GDAL) inside the 64 bits Linux OS that OpenEV expects, eventually over OracleVM for safety
  • I only use basic FWTools OpenEV functionalities
• I would opt for 17" display, 32 GB RAM, 2*2 TB SSD storage (~3100US$), and pay the extra price if reasonable, for installed and tested OpenEV solution (displaying a color composite of a full Landsat 8 image downloaded from USGS)
• Is it possible to distribute to interested people a copy of a suitable backup of the VMbox solution for them to install and run on their own machine?

intel_x86-64    Core i7    
Windows 10
       bash 



For workstation installation, refer to tarawa tutorial

• My workstation: from 1999 to 2014: I used Toshiba Satellite laptops.
  • then I moved to MSI GS70 64 bits Intel x86_64 laptop: Intel Core I7 2.13 GHz, 16 GB RAM, 17" screen 1920*1080 (16:9, full HD).
  • In march 2018, I moved to a ASUS ROG STRIX 17" laptop.
• My operating system: Windows 10/Oracle VM virtual box, 32 bits Ubuntu 16_LTS 32 bits/Gnome/bash.
• 4SM code is proprietary ; it is written and compiled C.
• 4SM system calls: 4SM calls some executables or Linux commands
  • GMT: gmtset , psbasemap, pstext , psxy, and psscale: 4SM writes some scripts which call a few modules of GMT from U. of Hawaii (please note that GMT may be installed using Ubuntu's Synaptic Package Manager). These executables are included in the 4sm.calls.zip zipfile
  • shp2text: using this executable, 4SM converts shapefiles to textfile SHP.txt, for use with the
    • -Recode argument. This executable is included in the tutorial download
  • wget, gv and cpuid: install them using Ubuntu Software Center
    • gv: default PostScript viewer in 4SM. If you use another viewer, you have to place a -Calls/epsviewer_yourviewer argument in your commandline
  • firefox: default browser in 4SM. If you use another browser, you have to place a 
    • -Call/browser_yourbrowser argument in your commandline
  • gedit: default text editor in 4SM. If you use another texteditor, you have to place a 
    • -Call/texteditor_yourtexteditor argument in your commandline
  • chmod, rm, mkdir, dir, cp, zip, bzip2, whoami come with the Linux distribution
  • cpuid: if you want to become a superuser of 4SM
  • wget: if you want to download/update a mirror copy of 4SM website on your computer/network
• Compiler: 4SM is compiled under Linux/Gnome/bash: " gcc -lm -w -m32 -g 4SM.c -lm -o 4SM"
• Image format: image.pix from PCIgeomatica, band-interleaved, preferably file-interleaved.
• Image preparation and display:
  • I formerly used ImageWorks and EASI/PACE from PCI .
  • Since 2005, I only use OpenEV FWTools for import/export, image display and vector activities.
• GUI: I would like to develop a GUI with Qt Designer or GLADE in order to manage the 4SM command line.

• This full HD screen display shows
  • under Oracle VM Virtual Box running Ubuntu 32 bits
  • my XTERM terminal as a backdrop
  • the tarawa-subset tutorial command line script,
  • the OPENEV display of the tarawa-full.pix image, complete with georeferencing
  • Google web browser under Windows 10
• This demonstrates that the OPENEV solution still has a future,
  • and it costs nothing!

  under Ubuntu 16 LTS 32 bits 

  gcc -lm -w      -m32 -g 4SM.8.07.c -lm -o 4SM.8.07

• "system programming languages (like C) are well suited to building components where the complexity is in the data structures and algorithms"
• "scripting languages (like python) are well suited for gluing applications where the complexity is in the connections"
  • "my conclusion: keep 4SM in C, which is "a system programming language"
• please read http://webcem01.cem.itesm.mx:8005/s201513/tc2026/scripting_xxi.pdf
  • Does the application implement complex algorithms or data structures?
    • I think probably YES
    • "stratified" waters over the visible range makes for a fairly complex description of diffuse attenuation properties
    • 4SM makes good use of dynamic memory allocation, and of structure data type
  • Does the application manipulate large datasets (e.g. all the pixels in an image) so that execution speed is critical?
    • I think YES
    • think of it: a 1 m GSD 17 bands hyperspectral image like mahone-bay or  heron-casi
  • Are the application's functions well-defined and changing slowly?
    • I think YES: took me 23 years!!
  • Is the application's main task to connect together pre-existing components?
    • I think NO, certainly NOT the main task
    • system calls to pre-existing gv, shp2text, or OpenEV are very simple and effective in C
  • Will the application manipulate a variety of different kinds of things?
    • I think NO
  • Does the application include a graphical user interface?
    • NO: entirely controlled by a powerfull and well structured command line
    • GUI not needed actually;
    • although much desired/demanded by lazy would-be practitioners: can wait!
  • Does the application do a lot of string manipulation?
    • NO, just a few for building output file names, and for deciphering command line
  • Will the application's functions evolve rapidly over time?
    • I think NO
    • after 23 years, all main features have been identified and implemented
    • catters for multi/hyperspectral imageries
    • catters for various pixel sizes
    • catters for very large images
  • Does the application need to be extensible?
    • I think NO, for the years to come
    • already does a lot
    • covers all image formats and ground sample distances
    • does both the optical calibration and the raster processing
    • does the deglinting, pan sharpening, smart smoothing, model inversion, and bottom typing
    • runs and displays spatial and spectral profiles