Tutorial_Coded_Light_Projection

Experiments

Introduction

Classification

Time-multiplexing

Spatial codification

Direct codification

Formació

Time-multiplexing: hybrid methods (I)

• In order to decode an illuminated point it is necessary to observe not only the sequence of intensities received by such a point but also the intensities of few (normally 2) adjacent points

• The number of projected patterns reduces thanks to the spatial information that is taken into account

•

• The redundancy on the binary codification

is eliminated

Hall-Holt and Rusinkiewicz technique:

4 patterns with 111 binary stripes

Edges encoding: 4x2 bits (every adjacent stripe is a bit)

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Edge codeword: 10110101

Conclusions