Focal Surface Projection: Extending Projector Depth-of-Field Using a Phase-Only Spatial Light Modulator

TL;DR

This paper introduces a focal surface projection method using a phase-only spatial light modulator to extend the depth-of-field in projection mapping, enabling focused images on surfaces with varying depths.

Contribution

It presents a novel approach employing phase-only spatial light modulation to achieve nonuniform focusing for extended depth-of-field in projection mapping.

Findings

Successfully demonstrated physical feasibility of the method

Achieved focused projection on surfaces with significant depth variation

Enhanced projection mapping capabilities with extended depth-of-field

Abstract

We present a focal surface projection to solve the narrow depth-of-field problem in projection mapping applications. We apply a phase-only spatial light modulator to realize nonuniform focusing distances, whereby the projected contents appear focused on a surface with considerable depth variations. The feasibility of the proposed technique was validated through a physical experiment.