Author Topic: What is correct value for pitch and roll  (Read 142 times)

itforester

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What is correct value for pitch and roll
« on: March 30, 2020, 05:33:51 AM »
Hi
I am new to exif data and exiftools, but has worked with underwater AUVs.
I have received data from a user with a Flir Duo Pro R camera. The jpg files seem to have a pitch value of 84 and a roll value of 170. I would assume that the correct values should be around +5 to -5 when taking pictures of the grond. A roll of 170 degrees would mean that the plane was flying upside down. My assumption is that the correct value is Pitch/100.0.

Example:
GPSLatitude,           GPSLongitude,      GPSAltitude, Yaw,     Pitch,   Roll
70.2609252933333,30.7670879363889,49.572,     -20.67,  -81.99, 129.57
70.2608947751111,30.767332077,       49.757,     -28.41,  -81.41, 138.68

Can anyone please tell me if this is correct assumption?

PS: exiftools seems to be very good!

Phil Harvey

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Re: What is correct value for pitch and roll
« Reply #1 on: March 30, 2020, 07:33:29 AM »
I have no idea.  First, it would be useful to know where the Yaw/Pitch/Roll information is stored (ie. the -G1 location).

But my guess would be that ExifTool is correct.  Was the camera pointed down?  If so, you would expect a pitch of about -90 (if these are the camera direction angles).

Your table shows a pitch of -81, which is close.  However in your description you mention a pitch of 84, which is nearly the exact opposite direction.

- Phil

Edit:  It would be great if you could send me a sample from this camera (philharvey66 at gmail.com).  I don't have a JPG from this model yet.
« Last Edit: March 30, 2020, 08:18:45 AM by Phil Harvey »
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).