dual structured light 3d using a 1d sensor - eccv 2016 structured light 3d using a 1d sensor ......

DDual SStructured Light 3D using a 1D SensorJian Wang, Aswin C. Sankaranarayanan,

Mohit Gupta, and Srinivasa G. Narasimhan

Why Use a 1D Sensor for 3D Scanning?

Wavelength ShorterLonger

Visible

UltravioletInfrared

Structured Light Outside Visible Spectrum or Using Special Sensors

Visible SWIRPenetrate Atmosphere Obscurants

See through Smoke and FireVisible SWIR

Short-wave infrared (wavelength 0.9um~2.5um)

Per-pixel PriceSpectral

bandDetector

Technology $/pix

NIR/VIS/NUV SiSWIR InGaAsDynamic Vision Sensor

Case studies:

2D SWIR Camera

Proposed: Optical Dual of Traditional Structured Light System

Hardware Prototype and Results

Objective lens

Relay lens

Cylindrical lens

Line-sensor

Projector

2D camera helper

Cylindrical lens

Line-sensor

Hardware Setup

Conventional Structured Light Proposed: Dual Structured Light (DualSL)

Structured Light 3D Imaging

The Digital Michelangelo Project

Microsoft KinectDepth mapPattern on scene

Cost$100K

1D SWIR Camera

Cost$100

2D DVS Camera

Cost$5K

Cost$100

1D DVS Camera

Scene

2D Camera2D Projector

Scene

2D Camera1D ProjectorCylindrical lens

Scene

2D Projector1D CameraCylindrical lens

Replace the 2D projector by 1D projector + cylindrical lens

3D location obtained by ray-plane triangulation

Switch the role of cameraand projector

Ray Diagrams of the Optics Design

z

x

Objective lens

Line-sensor

z

y

Cylindrical lens

Objective lens

Line-sensor

Cylindrical lens

Without cylindrical lens

With cylindrical lens

Concave bowl

Translucent wax

Traditional SLwith 2D sensor

DualSLwith 1D sensor

1.6mm

mm

Results

3D Meshes