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PHOTO RENDERING Getting a 3D Effect

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Introduction

Matt Martin – Sherpa Design, Portland, OR

Located in Beautiful Portland, OR near the foot of the St. John’s Bridge

3DP with a ZCorp 510

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Sherpa Design

The Office

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3D Anaglyphic Image

GLASSES ON PLEASE…

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3D Photo Rendering in NX5

What is it used for?

Basics & Layout

Staging the part for rendering

Render environment setup

Render environment reuse

About showroom environments

Fun with 3D rendering

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Rendering 101

High Quality Image (HQI)Flat, Gouraud, & Phong provide limited quality, no texture mapping & the background is truncated to a single color.

Improved & Preview will get to you lighting effects and scattering.

Photo Realistic & Ray Traced is where photo rendering really starts.

Lighting, reflections, texture mapping and shadow effects are present.

Radiosity/FFA provides superior edge definition and is good for subtle shading.

Radiosity is actually a lighting pre-processing setup.

Light is emitted from the scene to the surfaces. Then from all of the surfaces, light is emitted again. This is repeated until the required accuracy is achieved.

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Adding Realism

Image Based Lighting (IBL)For ultra-realistic photo rendering affects. IBL is a rendering technique involving a plotted image on a dome or sphere which contains the model. This technique is best used with high dynamic range images (HDRI)

High Dynamic Range Imaging (HDRI)Set of techniques involving a greater range of exposures (values between light and dark areas) than normal digital photography.

Example of three exposures that are combined to create an HDR image

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HDRI Example

HDRI Image as a “Probe”

HDRI Image as a “Cross”

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NX5 Demo

Switch to live demo…Creating an assembly

Apply materials & textures then render (~15 sec)

Drag & drop a system visualization scene

Basic Scene Editor

Stage floor – new & render (~40 sec)

Apply reflection map

User defined image (jpg, tif, lwi) & render (~1.75 min)

Apply Image Based Lighting (EXR, HDR) & render (~7min) {switch to image vs. rendering}

Extract Scene for reuse

Demonstrate reuse

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Stereoscopic Imaging

3D images can be achieved by capturing an image from two slightly different viewpoints at the same time, creating two images that look almost identical.

OBJECT

D

D1

D1 =1/30*DRule applies for <7’ & >100’

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Capture 3D Imagery

Capture 3D Imagery for an Anaglyph Open OHH Pump Anaglyph in Photoshop

Establish camera view in perspective (show camera edit features)

Establish camera distance for the left camera.

Copy left camera to right (& rename)

Transform camera based on equation.

Render left image then right

Save off left & right images

Show Photoshop channel manipulation.

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Stereoscopic Imaging Types

Stereoscopic photography was invented practically the same time as conventional photography in 1839.

The Holmes reoscope was perfected in 1859 by Oliver Wendell Holmes. These are still in use today and can be found in antique shops around the world.

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Credits

Thank you to:

Jon Hayden of Sulzer Pumps for providing the model.

Shab Levy of The 3D Center of Art & Photography for mentoring and support. http://www.3dcenter.us

www.debevec.org for supplying excellent HDR images.

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Thank you