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How to make a new surface?

We generated an orthomosaic and it had several holes. I know that it is possible to fill in these holes by creating a new surface, but I am having trouble doing this. Is there a video tutorial about this process? I am able to pull up the right sidebar and see the green crosses that mark the area of the new surface, but it is unclear about how to fill in the holes from this point. Help please!

Hi Richard, 

In Pix4Dmapper, we don’t fill holes directly in the orthomosaic, but you can create a surface to make a flat area on your DSM.
It will help with some missing area such as the small alleys between buildings or improve the building edges on the DSM and thus the orthomosaic.

 

Best Regards,

Lisa