The Image Analyst needs guidance about what to look for in images that may indicate that the object of interest is a candidate life form.

This PowerPoint video presents a draft proposal for “Criteria for Using Image Analysis to Detect  Life Forms In Planetary Imagery” initially conceived back in May 2013.

After the realisation that rocks on Mars had nearly invisible protuberances, it quickly became apparent that just stating that these objects of interest did not look like rocks on Earth and then demonstrating that to be the case using lots of images was not enough to suggest convincingly that they were indeed candidate life forms.

From that realisation and with the help of NASA’s Exploratour Page a list was quickly devised that gave a good basis for detecting candidate life forms in imagery.

This amounts to a checklist  of  16 criteria that could be confirmed during the analysis of imagery. It is probably not possible in a single still image to directly confirm all 16 criteria. However deduction is a powerful tool and can allow valid conclusions to be made from visual clues observed in the images.

If after you have any suggestions for additions to these criteria, do please note them in comments. If they have merit they will be added to a future version of CICPLFI.


These videos are preliminary only and a long way from being ready for general publication. They are also meant to be viewed in conjunction with the Blog Posts.

The imagery in these PPTs is NASA’s and so strictly speaking cannot be shared to monetised sites. Other images are copyright and cannot be used on monetised sites.

By all means share a link to the videos, but please don’t download and post these videos on your site as your own work or mine. It will be traced to this site and it may shut it down before I can finish sharing 5 years worth of observations.

GENERAL – The PowerPoints published on this Blog:

  1. Are MP4 Format
  2. Are usually quite long 30 mins ~1 Hour – The video may take a few minutes to load depending on your speed of connection and so on. Please be patient.
  3. Have no Audio or Commentary – Commentary would slow down these lengthy presentations too much! Even I would not want to listen to myself droning on about slides that already say it all in text for 40 minutes or so – You will have peace and quiet to contemplate the PPT content or some music of your choice rather than having to endure mine…that torture I would not inflict on others ever.
  4. Coffee is advised…and a biscuit if you have been good today 🙂
  5. If the videos play too small on your screen my apologies. Press <F11> for full screen mode in your browser and view at 150% Zoom.