Forensic Case: How to generate a virtual X-ray with 3ds Max and Photoshop?

[Anonymous]

Please see this post:

Virtual Injured Cranium in Photoshop Forum 

Notice the image below:

Front View to be Subjected to Virtual X-Rays

It is a virtual cranium with injuries (done in 3ds Max) and I would like to to use a combination of 3ds Max (it has transparency?) plus the advanced Photoshop feature set in order generate virtual X-rays as similar as possible to the ones from the real patient's autopsy:

Kennedy Anterior/Posterior X-Ray from Autopsy

TIA,

-Ramon F. Herrera
JFK Numbers
[email protected]

[Anonymous]

Let's elaborate. I am convinced that taking the screenshot from 3ds Max as seen above directly to Photoshop is a poor workflow. The problem is that the frontal osseous material completely obscures the posterior one.

I don't know about the internals of 3ds Max transparency implementation but I hope (feature request!) that two layers of bone would be denser than a single layer.

The current virtual cranium has uniform bone thickness. Future versions will be more realistic, incorporating varying thickness:

(a) Provided by mother nature

(b) Provided by the projectile.

TIA,

-Ramon F. Herrera
JFK Numbers
[email protected]

[Anonymous · Accepted solution]

For the 3dsmax part, look at Arnold utility-map 'Facing Ratio'

[Anonymous]

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@Anonymous wrote:

For the 3dsmax part, look at Arnold utility-map 'Facing Ratio'

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I have another data point. I purchased that particular model (medium resolution) here:

Human Skull Anatomy at CG Studio 

Notice 2 rendering in that site:

Is that transparency?

"X-Ray Shader not Included"

-Ramon F. Herrera
JFK Numbers
[email protected]

[Anonymous · Accepted solution]

First image is very likely a glass material. Shouldn`t be to problematic to do with Physical Material. Just use the 'Glass' template.

For the second image, you would light the object (i didn`t lit the teapot) to get a nice rim light and play with the parameters of the Facing Ratio shader.

I would also try to consult @madsd . He is the Arnold/OSL guru on this board and have possibly better or additional ideas.

[Anonymous]

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@Anonymous wrote:

First image is very likely a glass material. Shouldn`t be to problematic to do with Physical Material. Just use the 'Glass' template.

For the second image, you would light the object (i didn`t lit the teapot) to get a nice rim light and play with the parameters of the Facing Ratio shader.

I would also try to consult @madsd . He is the Arnold/OSL guru on this board and have possibly better or additional ideas.

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This is investigation is going better than I expected. I have Mads Droschler is my list of gurus. Additionally, I had no idea that Photoshop can import 3ds files and it has material settings similar to the 3D world:

Photoshop 3D Material Settings

Photoshop 3D View

-Ramon
JFK Numbers