Hi All,

I have a project I am working on.  I am looking for an old cabin site, where a log cabin sat on the property for about 60 years.  The cabin would have placed pressure on the ground, due to the weight of the logs.  It was there from about 1840 to 1900 when it just wasted away.

What I am looking for, is the outline of where the cabin sat.  The idea being that the dirt directly beneath the logs would have been compressed compared to the surrounding soil.

In 1978 or so, I was looking at  a paper from Kodak, on the use of IR, or Near IR for finding old sites based upon the compression of the soil as described.  They were using IR film.

Here is what I am asking for your assistance with.

I intend to purchase a plane drone, equipped with a canon S100 camera and operated with software that wil stitch images together and create a map.  I intend to have one camera in visible spectrum, and the other in either full or IR.

So, is there anyone here that can guide me on what I am after?  Do I want to use Near IR, IR, or Full Spectrum digital cameras to be able to see that difference in the compacted soil vs surrounding soil.  at 2 inches per pixel, I should be able to get about 3-4 pixel width for the imaging.

What wavelength Nanometer should I get?  Or do I want Full Spectrum Capabilities?  

As I recall, Kodak represented that you would get the best imaging about 30 minutes after sunrise, to get the best reflection of the reflective heat differences.   

I am looking at a 3DR Aero-M Fixed Wing UAV Drone for the vehicle.with the Pix4Dmapper Pro edition to stitch together images.  

This question is not about the flying platform, but rather how to be able to see what I need to see.  I would like to give my email here which is dennisjwynne@yahoo.com , so beyond replying here, please reach out to me at the email listed.  Please place in Subject line DIY Response, along with a phone number if you don't mind.  I just need some help here.

Thanks to all.

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Replies

  • Dennis,

    The type of imagery they're talking about is likely thermal IR rather than near infrared (NIR). I know some people who have used it for archaeological purposes but I'm not sure if compacted soil would stay compacted for 100+ years. The FLIR Vue Pro series of cameras is the best option for most thermal IR applications right now.

    The Aero-M is discontinued and no longer supported by 3DR, though I believe a couple companies bought up the remaining 3DR inventory. There is a very similar alternative available in the E384, which in full disclosure is built by my company, Event 38. The main differences between the E384 and Aero-M are:

    - Camera protected by moving hatch mount rather than looking glass and skids on Aero-M

    - E384 has longer flight time due to battery size & motor/prop combo

    - E384 doesn't use airspeed sensor

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