Say i have good coverage and overlap on the ground under a tree crown, is it possible to exclude the crown in the mosaic? maybe by classifing them in the pointcloud as disabled and then process the mosaic? it should be theoretically possible?
Classifying the point cloud would be a good idea. You can assign them to the group disabled and those points will not be used in step 3 (https://support.pix4d.com/hc/en-us/articles/202560499-How-to-edit-the-point-cloud-in-the-rayCloud)