PHOTO RENDERING Getting a 3D Effect

1. PHOTO RENDERINGGetting a 3D Effect

2. Introduction • Matt Martin – Sherpa Design, Portland, OR 3DP with a ZCorp 510 Located in Beautiful Portland, OR near the foot of the St. John’s Bridge

3. Sherpa Design The Office 3

4. 3D Anaglyphic Image GLASSES ON PLEASE… 4

5. 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 5

6. 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. 6

7. 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 7

8. HDRI Example HDRI Image as a “Probe” HDRI Image as a “Cross” 8

9. 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 9

10. 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*D Rule applies for <7’ & >100’ 10

11. 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. 11

12. 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. 12

13. 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. 13

14. Thank you