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Author Topic: Dense Cloud Inverted  (Read 6252 times)

Willson

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Dense Cloud Inverted
« on: February 07, 2018, 09:40:54 PM »
My dense cloud is INVERTED after going through all the processes: align photo > photo optimisation > build dense cloud.

Why does this happen?

However, when i click on "look through" on one of the photos, the dense cloud appears to be in the correct orientation.
After clicking on the "reset view", it goes back to the inverted dense cloud again.

How to resolve this issue and make the dense cloud to be in the correct orientation?

Some photos are attached.

Thank you.

« Last Edit: February 07, 2018, 09:43:00 PM by Willson »

Alexey Pasumansky

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Re: Dense Cloud Inverted
« Reply #1 on: February 07, 2018, 10:59:59 PM »
Hello Willson,

I see several possible reasons that may be causing the problem:
- the coordinates are measured in WGS84 system, but the coordinate system of the chunk is set either to projected system or to local coordinates.
- the coordinates of Latitude / Longitude (or Northing / Easting) are mixed and loaded instead of one another.
- incorrect camera orientation angles are loaded to Yaw, Pitch, Roll columns of the Reference pane.
- Altitude information is invalid and has "below sea level" mark in the image EXIF, so all altitude appear negative in the Reference pane.
Best regards,
Alexey Pasumansky,
Agisoft LLC

Alexey Pasumansky

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Re: Dense Cloud Inverted
« Reply #2 on: February 08, 2018, 09:35:01 AM »
Hello Willson,

You can set "Camera Accuracy (deg)" parameter in Reference pane settings dialog to 2000, for example. In this case source orientation angles would be almost ignored during the georeferencing when you press Update button on the pane's toolbar.
Best regards,
Alexey Pasumansky,
Agisoft LLC