Depth perception of surfaces in pictures: looking for conventions of depiction in Pandora's box

Area of Science:

• Visual Perception
• Cognitive Psychology
• Image Analysis

Background:

• Monocular depth perception in images is complex.
• Gregory's binocular rangefinder offers a method for investigation.
• Haber identified key conventions for depth rendering in pictures.

Purpose of the Study:

• To investigate depth perception in monocularly viewed pictures.
• To examine stimulus conditions identified as depth-rendering conventions.
• To understand assumptions underlying picture interpretation.

Main Methods:

• Utilized Gregory's binocular rangefinder.
• Conducted two experiments focusing on Haber's depth-rendering conventions.
• Analyzed stimulus conditions influencing apparent depth.

Main Results:

• Confirmed a default background space layout assumption.
• Demonstrated that local feature interpretation influences perception of surrounding areas.
• In photographs, apparent depth correlates with light source discrepancy and highlight/shadow contrast.

Conclusions:

• Picture interpretation relies on assumed spatial layouts.
• Local visual cues significantly impact the perception of depth in images.
• Photographic depth cues are influenced by lighting and contrast.