GPU Pro 4

2

III

Simulating Partial Occlusion

in Post-Processing

Depth-of-Field Methods

David C. Schedl and Michael Wimmer

2.1 Introduction

This chapter describes a method for simulating depth of field (DoF). In particu-

lar, we investigate the so-called partial occlusion effect: objects near the camera

blurred due to DoF are actually semitransparent and therefore result in par-

tially visible background objects (Figure 2.1). This effect is strongly apparent

in miniature and macro photography and in film making. Games and interac-

tive applications are nowadays becoming more cinematic, including strong DoF

effects, and therefore it is important to be able to convincingly ...