Gap Light Analyser

Dear Mazis;

I think that it is in function of analysis you want to do.

With a good digital camera, a stand and a 'fish eye' lens you can collect images that represent hemispheric data (canopy openness, leaf area index and photosynthetic active radiation under forest canopies). There are a number of options for the analysis. In R HemiphotR library seems very user friendly (https://github.com/naturalis/Hemiphot or on CRAN).

Article Hemiphot.R: Free R scripts to analyse hemispherical photogra...

Give hemisfer, developed by Patrick Schleppi from WSL Zurich, a chance: https://www.schleppi.ch/patrick/hemisfer/

Dear Anastasios Mazis,

Best software for canopy estimation analysis.

I hope the information will help you.

With Best Wishes,

Samir G. Pandya