Gary, Interesting. Do you know the names of any of these programs? Have you ever used any of them yourself.? I am wondering what additional information would need to be collected in order for the programs to calculate the volume, say of a tree crown. You likely would need stereo offset between shots, distance to target, focal length. Would the focal length be designed for 35 mm, digital or what, because what is considered to be a "normal" focal length would vary with film or digital sensor size. Would you need a scale of some sort in the image? How many pairs would be needed to say map the crown of a big field grown tree? How exacting would the spacing of the photographs need to be? I can see that the stereo thing could work, but I am wondering what other information is needed and how difficult it would be to collect this supplemental data to make the process work.
Ed "The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science." - Albert Einstein ----- Original Message ----- From: Gary A Beluzo To: [email protected] Sent: Wednesday, August 05, 2009 9:43 PM Subject: [ENTS] Re: Stereo Photography Ed, Once you have a good 3D setup that works there are numerous software programs that will take 3D images from several perspectives to determine various dendromorphometric variables including VOLUME. Gary --~--~---------~--~----~------------~-------~--~----~ Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -~----------~----~----~----~------~----~------~--~---
