topic Re: Mesh quality (.obj) in Revit Architecture Forum

Mesh quality (.obj)

mattia7C596 — Tue, 25 Feb 2025 10:58:39 GMT

Hi everyone, I need to export a good quality side view of a stone wall in order to make a detailed plan of defects and degradation, and eventually I need to measure quantitatively all the different degradated surfaces. I made my drone survey and I exported a pointcloud and a .obj mesh using Pix4dMatic. I'm pretty sure the mesh has a good quality as I set the highest parameters of resolution, and in fact the .jpg that comes with the .obj has the desired quality (attached "texture.png" and attached "pix4d.png").

I'd like to import the mesh into Revit to be able to do a simple section and then export it to Autocad. When I import the mesh into Revit (as Link CAD file) the quality of the mesh is very bad (attached "revit.png). Is there any way I can solve this?

Thank you for your attention.

Re: Mesh quality (.obj)

hmunsell — Tue, 25 Feb 2025 15:48:46 GMT

What I see in all 3 examples is an "image" (jpg?) of the stone wall. I'm not seeing the actual Mesh. Is the "Mesh" bad, or is the Image attached to the mesh having reduced quality when brought into Revit?

Re: Mesh quality (.obj)

mattia7C596 — Tue, 25 Feb 2025 15:57:46 GMT

Yes, the images were just snapshots to show the difference in quality. The mesh is perfect in the eleboration software and seems good also in the exported .jpg (this one looks like a confused patchwork but the resolution and the stone details are fine. I can't attach it to the message because the file is too big). It looks like the quality is reduced when brought into Revit.

Re: Mesh quality (.obj)

hmunsell — Tue, 25 Feb 2025 16:16:57 GMT

@mattia7C596 wrote:

The mesh is perfect in the eleboration software and seems good also in the exported .jpg

The Mesh (obj) is a model component, The JPG is just a raster image. Do you need the 3D mesh in AutoCAD, or do you just need the image to markup?

Re: Mesh quality (.obj)

mattia7C596 — Tue, 25 Feb 2025 16:31:36 GMT

I eventually need the image to markup. The fact is that the wall is not straight, and I need the section to follow the wall allignment as good as possible, in order to represent the wall unfolded view, and in a correct scale too. Revit usually is the best tool to use to get this done, but I lose the quality of the images which I cannot give up. I usually do this with point clouds when I don't need to deliver photorealistic views.