Aximorphic Perspective Projection Model for Immersive Imagery

TL;DR

This paper introduces the aximorphic perspective projection model for immersive imagery, allowing diverse lens effects in real-time graphics, enhancing perceptual accuracy and artistic control.

Contribution

The paper presents the aximorphic projection model that extends traditional perspective to include various lens distortions, enabling combined projections for improved visual perception in real-time graphics.

Findings

Each projection type accurately influences perception of space aspects.

Combining multiple projections enhances perceptual realism.

Model is openly available for adoption.

Abstract

A wide choice of cinematic lenses enables motion-picture creators to adapt image visual-appearance to their creative vision. Such choice does not exist in the realm of real-time computer graphics, where only one type of perspective projection is widely used, a linear perspective. This paper presents an extended perspective imaging model, which can represent distortion and FoV parameters of entire variety of film and photographic lenses (e.g., wide-angle, fisheye, anamorphic), while preserving parametrization in an artistically convincing manner. Self-experimentation with the model revealed that each projection type provides accurate perception of a different aspect of depicted space (e.g., speed, distance, shape). Presented model, enables combination of multiple projections, each on a different axis of the image, to achieve optimal perception for a given scenario. This new projection, named aximorphic, was made available here, under an open license (CC BY-SA 3.0), for a wide and easy adoption.