DIGITIZING REALITY

AN INTRO TO 3D SCANNINGWith Jordan Williams

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OUTLINE

• Technology Overview• Current Uses of 3D Scanning• Challenges in Scanning• Getting Started with Scanning• The Future for Scanning

TERMINOLOGY: POLYGONS

TERMINOLOGY: TEXTURE

TERMINOLOGY: TEXTURE

TERMINOLOGY: TEXTURE

BEFORE 3D SCANNING

TECH: CMM

USES:

•Manufacturing•Prototyping•Industrial Design•Reverse Engineering

TECH: CMM

Pros:•Very Precise

Cons:•No Texture Data•Very Slow•May damage scan subject (poor for artifacts)

TECH: Laser Scanning

USES:

•Science•Engineering•Curation

TECH: LIDAR

TECH: Laser Scanning

Pros:•Flexible•Accurate

Cons:•No Texture Data

TECH: LIDAR

USES:•Archaeology•Seismology•Geology•Mapping

TECH: LIDAR

TECH: LLDAR

TECH: LiDAR

Pros:•Good Detail•Largest Scan Area•Flexible

Cons:•Quite Slow•Heavy Processing Requirements•Significant Capital Outlay

TECH: Structured Light

USES:•Measurement•Forensic Science•Reverse Engineering•Curation

TECH: Structured Light

TECH: Structured Light

Pros:•Fast•Accurate•Versatile

Cons:•Lighting Conditions•Calibration

TECH: X-Ray Computed Tomography

USES:•Medical•Void Detection•Metrology

TECH: X-Ray Computed Tomography

TECH: X-Ray Computed Tomography

Pros:•Very Accurate•Flexible

Cons:•Image Artifacts•Significant Capital•Radiation Exposure

TECH: Photometric Stereo

USES:•Facial Recognition•Human Scanning•Entertainment

TECH: Photometric Stereo

TECH: Photometric Stereo

TECH: Photometric Stereo

Pros: •Accurate•Excellent Textures

Cons:•Expensive•Requires Complete Lighting Control

TECH: Photometric Stereo

TECH: PHOTOGRAMMETRY

TECH: PHOTOGRAMMETRY

TECH: PHOTOGRAMMETRY

TECH: PHOTOGRAMMETRY

Pros:•Good Accuracy•Best Texture Data•Very Fast•Flexible

Cons:•Heavy Processing

TECH: PHOTOGRAMMETRY

TECH: Hand-Held Structured Light

TECH: Hand-Held ARTEC

TECH: GeoMagic Capture

TECH: Hand-Held Fuel3D

TECH: Hand-Held Fuel3D

TECH: Turntable Scanner

TECH: MakerBot Digitizer

TECH: Mobile

USES:•Recreation•Experimentation•Education

TECH: Mobile

MOBILE: iSENSE

SCANNING USES

USES: Engineering

•Reverse Engineering•Prototyping•Production

USES: Engineering

USES: Medical

USES: Medical•Dental•Dermatological•Implants•Prosthesis•Full Body Scans

USES: Medical

USES: ART

USES: FASHION

USES: LANDMARKS

USES: Terrain Mapping

USES: CAPTURE THE MOMENT

Bride Groom PicOthers?Can Duplicate Slide

USES: PRESERVATION

USES: PRESERVATION

USES: PRESERVATION

Smithsonian X 3D3d.si.edu@3D_DIGI_SI

GETTING STARTED

GETTING STARTED: KINECT

GETTING STARTED: DAVID

GETTING STARTED: 123D CATCH•123D Catch Images

CHALLENGES: SCANNING

•Specularity•Translucency/Transparency•Tiny Details•Data Overload•Texture Acquisition

CHALLENGES: SPECULARITY

CHALLENGES: SPECULARITY

CHALLENGES: SPECULARITY

CHALLENGES: TRANSPARENCY

CHALLENGES: TRANSPARENCY

CHALLENGES: TINY DETAILS

CHALLENGES: RESOLUTION

CHALLENGES: TEXTURE

WORKFLOW: POINTCLOUD CONV

WORKFLOW: MESH CLEANUP

•Zbrush•Maya•Blender•Mudbox•Meshlab

WORKFLOW: PRINT PREP•Meshlab•Netfabb•Materialise Magics

SCIENCE VS ART•Not Turn-Key•Heavy Human Involvement•Need Good Artists

WHAT’S NEXT?

FUTURE: COMPUTER VISION

FUTURE: DIGITAL DOUBLES

FUTURE: MEDICAL BLUEPRINTS

FUTURE: VIRTUAL FITTING

FUTURE: HOLODECK

FUTURE: REPLICATION

THANKS!

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