How to clean up model

How do I clean up the top right and left and bottom right corners up ? Do I use the clipping tool and if so how do I remove these bad area’s out of my model 



please navigate to the reconstruction tab and use lasso or rectangle to select the bad parts of your model, then once selected, hit Filter selection in the same tab. Please keep in mind that you can only do such operation after Reconstruction has been done. The sparse point cloud after alignment cannot be filtered.