Author Topic: Camera orientation from IMU  (Read 3908 times)

Chris L

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Camera orientation from IMU
« on: May 08, 2012, 10:34:04 PM »
I have been using photoscan on photos taken with a camera mounted to an airborne LiDAR. As such, I have good camera positions and pointing angles from the LiDAR's IMU. I have a few questions on using these data in photoscan:

1) 0.8.5 has a much nicer file reader for bringing in the camera positions (THANKS!), and now also takes Yaw, Pitch, Roll. But, I noticed on other posts here that the processing does not use these data yet?

2) How are Yaw, Pitch, Roll defined? Is Yaw defined like compass headings, with 0/360 at north and clockwise from there?

3) Would it be possible in the future to read .pos files? This is a text format that I think comes from Applanix but others have adopted it as a fairly standard IMU text file output. It is just 7 columns of time, lat, lon, hae, roll, pitch, yaw in ascii. I can send a sample file if interested.

Thanks in advance.

Alexey Pasumansky

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Re: Camera orientation from IMU
« Reply #1 on: May 11, 2012, 03:37:53 PM »
Hello Chris,

1) Currently PhotoScan doesn't use Yaw, Pitch, Roll data for processing, but it would be implemented in the future releases.

2) Yes, you are right.

3) Could you please send an example of .pos file to Wouldn't there be a problem with setting a correspondence between images and data, since there are no image filenames?
Best regards,
Alexey Pasumansky,
Agisoft LLC