Support Website Contact Support Blog

1 area of intrest, 2 flights => 2 clouds ?

What can cause two point clouds? Where the two flights overlap, there are two clouds in the Z axis about 1m apart. Different camera parameters?

Hello Troy,

It can be caused by low overlap between two flights or within an area of one flight, which can create 2 blocks and there is not a good connection between them, this can be solved by creating some manual tie points in the area where the blocks are disconnected, and then reoptimizing:

https://support.pix4d.com/hc/en-us/articles/202560619

If you still have problems after doing the steps above, please send us by email the quality report so we can check in more detail.

Regards,

From experience (this is called Noise). I have seen it happen due to errors in calibration as a result of poor overlap or not enough pixels in the photos to work with, sometimes reflectivity of the surface (think of a car bumper).

One of my attempts with the software cause this as a result of using a camera with a “cheap” sensor.