# "Ghost" parts in 3D model triangle mesh **URL:** \ **Category:** PIX4Dmapper Questions/Troubleshooting\ **Created:** [April 20, 2018, 6:48pm UTC](https://community.pix4d.com/t/ghost-parts-in-3d-model-triangle-mesh/6403 "2018-04-20T18:48:50Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Dario\_Finderle](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@Dario\_Finderle](https://community.pix4d.com/u/Dario_Finderle)\ **Post date:** [April 20, 2018, 6:48pm UTC](https://community.pix4d.com/t/ghost-parts-in-3d-model-triangle-mesh/6403/1 "2018-04-20T18:48:50Z")
Flew a large building with nadir and 45 degrees grid, oblique flight and some terrestrial shots. 635 pictures, all cameras are calibrated, point cloud looks good. I have a Pix4Dmodel licence. But after finishing step 2. Point cloud and Mesh, when I look at the triangle mesh, it looks terrible, with artifacts.   What is the problem? ---
**Author:** ![Gary\_La\_Mantia](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/gary_la_mantia/32/300_2.png) [@Gary\_La\_Mantia](https://community.pix4d.com/u/Gary_La_Mantia)\ **Post date:** [April 20, 2018, 9:27pm UTC](https://community.pix4d.com/t/ghost-parts-in-3d-model-triangle-mesh/6403/2 "2018-04-20T21:27:41Z")
Is this Go-pro imagery? Increase number of images for ATP’s to a higher value. Flight plan looks good. Split the data-sets up. Do some cloud editing. I’m guessing the spares cloud is very noisy, practice techniques to reduce noise.   ---
**Author:** ![Dario\_Finderle](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@Dario\_Finderle](https://community.pix4d.com/u/Dario_Finderle)\ **Post date:** [April 21, 2018, 4:43am UTC](https://community.pix4d.com/t/ghost-parts-in-3d-model-triangle-mesh/6403/3 "2018-04-21T04:43:50Z")
Garry, no this is P4P imagery. I’ll try what you recommend, thnx ---
**Author:** ![Dario\_Finderle](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@Dario\_Finderle](https://community.pix4d.com/u/Dario_Finderle)\ **Post date:** [April 22, 2018, 6:48am UTC](https://community.pix4d.com/t/ghost-parts-in-3d-model-triangle-mesh/6403/4 "2018-04-22T06:48:51Z")
Garry La Mantia, what do you mean by increasing number of images for ATPs? Which option is it? Any idea of a good link that explains cloud editing? ---
**Author:** ![kialdowns](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/kialdowns/32/1221_2.png) [@kialdowns](https://community.pix4d.com/u/kialdowns)\ **Post date:** [December 22, 2019, 6:50am UTC](https://community.pix4d.com/t/ghost-parts-in-3d-model-triangle-mesh/6403/5 "2019-12-22T06:50:36Z")
I had the same issue. I called them blobs. Just curious if increasing the number of ATPs solved this issue. I’m reprocessing my data, now and will report if this solves the issue. ---
**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\ **Post date:** [December 23, 2019, 10:20am UTC](https://community.pix4d.com/t/ghost-parts-in-3d-model-triangle-mesh/6403/6 "2019-12-23T10:20:30Z")
Hi @kialdowns, After you reprocess the dataset please share your Quality Report with us and some screenshots of the rayCloud view. We’ll help you with your project. Regards