Scanning vs sculpting


Sculpted gnome

Sculpting mesh: 5 H, 43 Min
Painting texture: 12 Min
Retopo (Zbrush): 5 Min
UV mapping (UVUnfold): 6 Min

Bake Diffuse, Normal, AO: 1 H, 21 Min


Scanned gnome

Align: 3 Min
Build dense cloud: 53 Min
Building mesh: 5 Min
Removing unwanted geometry: 3 Min
Building texture: 3 Min
Retopo (Zbrush): 7 Min
UV mapping (Maya): 25 Min
Bake Diffuse, Normal, AO: 9 Min

The time used and the quality of the sculpt varies from person to person. If a sculptor was to do this the data would look different.
It is important to keep this in mind while looking at the gathered data.

Is it possible to scan a human with your cell phone?


Fredrik Ortmon first try
This was the first attempt. The arms and the head didn’t want to work but the clothes looked fine. I also found out that the arms had to be wider apart.


Fredrik Ortmon second try
Figured that the skin was too smooth and that was why the clothes worked but not anything else, so we had to do the head and the arms separately.


Fredrik Ortmon third try
Painted dots on the face and right arm. Worked better but still not perfect. Figured that I could fix that when I made the low poly. I had to try to fix a lot of the texture parts in Photoshop and bake first the body and then the head. I couldn’t use the texture for the arm since it was too messed up so I just cloned skin from the head to the neck and arm and then copied the arm to his left side. Used a DSLR with a polarized filter instead of my cell phone for this one. Should have made a grid with more dots.


This is what I finally got. I will place him somewhere in my demonstration level.

So, what can I do to make this easier for myself in the future?

1. Use a DSLR camera with a polarized filter. Sometimes the cell phone just isn’t good enough and the filter takes away most of the reflections.

2. The lighting is really hard to get right. I used frosted plastic sheets in front of the lights as diffuse filters but I should probably have added more of them. The problem was the space I had. I simply couldn’t place more lights in there and still move freely around the objects.

3. If possible: Mask away as much of the BG as possible with something that is black and non-reflective. It’s really easy to get color contamination.

4. Photograph all the angles twice. It takes just a few minus extra. It will take much more time to make a second attempt later on.

Taking it a step further


Hi poly garden gnome
62 Images

Align: 3 Min
Build dense cloud:
Building mesh:
Removing unwanted geometry: 2 Min
Building texture: 1 Min


Lo poly garden gnome

Retopo (Maya): 42 Min
UV mapping: 17 Min
Bake (Diffuse): <1 Min


Enhanced lo poly garden gnome

Bake (Diffuse, cavity, Ambient occlusion, Normal): 3H, 14 Min
Enhancements: 8 Min


Hi poly paper skull
51 images

Align: 9 Min
Build dense cloud: 38 Min
Building mesh: 12 Min
Removing unwanted geometry: <1 Min
Building texture: 1 Min


Lo poly paper skull

Retopo (Zbrush): 3 Min
UV mapping: 12 Min
Bake (Diffuse): <1 Min


Enhanced lo poly paper skull

Bake (Diffuse, cavity, Ambient occlusion, Normal): 3H, 6 Min
Enhancements: 10 Min


Hi poly gnome
58 Images

Align: 3 Min
Build dense cloud:  53 Min
Building mesh: 5 Min
Removing unwanted geometry:
Building texture: 3 Min


Lo poly gnome

Retopo (Zbrush): 8 Min
UV mapping: 25 Min
Bake (Diffuse): <1 Min


Enhanced lo poly gnome

Bake (Diffuse, cavity, Ambient occlusion, Normal): 1H, 21 Min
Enhancements: 16 Min

Difference in quality and time


Instant Coffee
Occipital Skanect
Scan: 4 Min
Coloring <1 Min
Low quality mesh and texture


Instant Coffee
Agisoft Photoscan
Align: 3 Min
Build dense cloud: 2 H 39 Min
Building mesh: 8 Min
Removing unwanted geometry: 4 Min
Building texture: 3 Min
The software had problems with the glossy surface and the thin edges but the texture is of  high quality


House
Occipital Skanect
Scan: 3 Min
Coloring <1 Min
Low quality mesh and texture


House
Agisoft Photoscan
Align: 4 Min
Build dense cloud: 16 Min
Building mesh: 5 Min
Removing unwanted geometry: 2 Min
Building texture: 2 Min
Not too bad geometry and good texture quality


Green bust
Occipital Skanect
Scan: 2 Min
Coloring <1 Min
Low quality mesh and texture


Green bust
Autodesk 123D Catch
Upload: 4 Min
Create model: 52 Min
Removing unwanted geometry: 3 Min
Low quality mesh with decent texture


Green bust
Agisoft Photoscan
Align: # Min
Build dense cloud: 1 H 45 Min
Building mesh: 9 Min
Removing unwanted geometry: 3 Min
Building texture: <1 Min
High quality mesh and texture

Conclusion:
The Xbox Kinect camera + Occipital Skanect is the absolute fastest way to scan the objects. The resulting mesh and texture is of low quality and could possible work for props in cell phone games or for background objects in other games. Could also work as a base mesh to sculpt on. I will not be trying this anymore.

Autodesk 123D Catch gives better meshes and textures but the resulting mesh is always in two parts with their own texture. xNormal crashed every time I tried to bake the textures to a new copy of the mesh. The green bust had all it’s parts in one of the textures so I could use that one. It is simply not worth the hassle due to the random quality in results the software gives. Could possible work as a basemesh to sculpt on.

Agisoft Photoscan is the slowest but best software. The quality of the meshes and the textures is in it’s own league compared to the other two solutions.

I will try KSCAN3D with the Kinect, just to be sure that the bad results is from the camera itself and not the software used.