Cheeseburger - and a Question

[CG-Guy]

Here is the result of my photos in 3D flow - the Textured Mesh and the same Textured Mesh as displayed after export into 3DS Max

Why did I lose the smooth cheese and other features here to be more rough looking? I did export the textured mesh and was expecting something similar

any ideas?

[SarahC]

Ah, check "Lighting" in Zephyr, you will likely get the same view.
As a default it doesn't illuminate the polygons directionaly, so it looks flat. When you turn on illumination, the direction of the polygons shows up.

To produce smooth lighting across the polygons, you need to use the right shader on your model inside the 3D modeller, and also you may need to specifiy "Smooth shading" in your 3D app. (Blender for example lets you set the normal calculations to produce smooth lighting effects like this: https://blender.stackexchange.com/qu...smooth-shading )

If you want the mesh to be smoother by adding more polygons, you can do that in Zephyr:

http://www.3dflow.net/zephyr-doc/en/3DF%20Zephyr.html?ToolsMeshFilters.html

https://en.wikipedia.org/wiki/Shading#Smooth_shading

[Andrea Alessi]

Hi Cg-Guy,

as Sarah pointed out you simply were looking at your mesh with the lighting off. It's always a good idea to also completely see the resulting mesh without color/texture (use the three colored triangles icon in the toolbar to toggle it) to see the actual mesh detail.

Also make sure to check out these two (very short, i promise) videotutorials. They go through mesh filtering and how to also apply filters on a mesh sub-selection.

https://www.youtube.com/watch?v=4P-hHDFjPq0

https://www.youtube.com/watch?v=k4z-dTHAg58

These are basic stuff compared to what you can do in blender or other professional tools, but are a good starting point

[CG-Guy]

Thanks for the help

[CG-Guy]

I ran smooth filter on the mesh and it turned out cleaner - here is the set in Marmoset 3

I will of course be making low polygon version but wanted cleaner high to bake normal maps from




Here's screen grab in Max - much nicer

[SarahC]

Looks delicious!

The only thing I can see that might need a tweak (I know you weren't looking for feedback, but I like discussions!) - is the cheese.
Maybe padding it out in your favorite 3D modeler?

It's glossy, so it's going to always be dimpled using photogrammatry as the "sliding" specular highlights influence the structure-from-motion calculations.
If you're doing these type of scans in the future - I recommend "matting" them - spray on starch or something similar, to reduce the specular noise. Then add in the gloss via a shininess/specular maps depending on your use of physically based rendering or not.

Also perhaps include cross-polarising in your workflow to get a slightly more even diffuse map - it saves a bit of time in post.

[CG-Guy]

I might be able to smooth that out in z-brush

add a backface mask then use smooth brush then export

ill give it a try and post success or failure

[CG-Guy]

Looks like smoothing using the brush is the less painful way to proceed

[CG-Guy]

It's a fast fix taking a few seconds to smooth out the area

I did need to use this new smooth model as my normal, AO etc.. but the previous model for transferring diffuse info as it seems to have hosed the UV info - I'll investigate further about that but its an easy fix without having to apply a spray on the subject matter in this case

[CG-Guy]

[SarahC]

Ohhh! You're so close - I wish I could help you with the UV's.. I don't know what's going on there.

I've had a google and the cross polarising filter looks to be very useful... and an interesting "stress visualiser" for transparent plastics!

Misting the shiny stuff with startch or hairspray would likely screw up the diffuse appearance too much for the tomato... but cross polarising and a bit of spray for projects in the future should get you through most issues.
If you solve that UV issue - that'd make a very valuable tutorial for people processing shiny things - if you were ever to have the inclination. =)

It'll be interesting to know how it goes - I hope you post back with some updates. =)

[CG-Guy]

Here's the outcome thus far on the cheeseburger - low poly with PBR textures

I've been busy on other items - I still am planning on creating the foil paper to set it all on and globs of ketchup and mustard

[CG-Guy]

Here's with foil and ketchup

[CG-Guy]

Here's the final real-time model as a result of 3D-Flow workflow - cup, foil, ketchup and some single fries were hand done with traditional ways