Discover the Many Worlds of Perspective

The Perspective Research Centre (PRC) is a research and educational institute with over 40 years of sustained research and innovation across art, science and technology, including writing, classification and teaching. Here, perspective is understood not simply as a method of drawing, but as a much larger interdisciplinary field concerned with vision, perception and representation—with how spatial reality is seen, optically imaged, geometrically projected, recorded, constructed and represented.

Knowledge of these processes has traditionally been divided among many disciplines, including art, optics, geometry, photography, architecture, vision science, imaging, computer graphics and digital media. As a result, perspective has never been fully established as a unified field: terminology remains inconsistent, its types and phenomena are often studied separately, and important relationships and principles are easily overlooked.

The PRC aims to bring this dispersed knowledge together through Perspective Category Theory (PCT), a framework for organising and relating the many kinds of perspective. By identifying and relating the types, forms and phenomena of perspective, PCT shows how optical perspective encompasses technical perspective, which in turn includes natural, visual, graphical and other forms. In doing so, the PRC seeks to establish perspective science as a distinct interdisciplinary field.

Learn, Explore & Research Perspective

Explore the searchable Abridged Dictionary of Perspective, an 84,000-word A–Z guide to 1,226 perspective types and forms. A full-text Dictionary search is also available on the sidebar, along with a complete site-wide search across approximately 375 PRC pages.

Want to learn what perspective is? Looking for a clear definition of perspective, or asking “what does perspective mean?” Here you can explore the many types of perspective, discover new types of perspective, and develop a broader understanding of perspective,  3-D space and perspective theory.

Start here

Choose a starting point based on your interests and level of knowledge.

Explore perspective images & views

Browse examples across the major forms of perspective.

  • Linear & Multi-Point Perspective Images →
  • Parallel, Axonometric & Oblique Images →
  • Curvilinear, Spherical & Panoramic Views →
  • Reverse / Inverse & Anamorphic Images →
  • Optical, Natural & Stereoscopic Views →
  • Mirror & Reflected Images →
  • Virtual Reality & Immersive Views →
  • Images of Illusion →

Finding perspective confusing?

Errors, misconceptions and false assumptions remain widespread in textbooks, teaching and established accounts. These sections examine some of the most common problems.

Size and scope of the project

A fundamental distinction in perspective is between natural perspective—including visual perspective, or how spatial reality appears to us—and artificial perspective, which concerns how spatial reality is represented in diagrams, drawings, pictures, photographs, films and digital media.

Across these domains, perspective takes many natural, visual, graphical, architectural, photographic, cinematic, scientific and computational forms. Major methods and systems exist within these domains, and the PRC develops theory to encompass and clarify their relationships.

Applications of perspective organised by discipline and
by five principal goals: View, Match, Represent, Illusion and Immersion.

To understand the size and scope of this project, begin by browsing  the Perspective Topics A–Z Master Index → (4.5 MB PDF), with 2,516 distinct topics drawn from the approximately 4,000 terms and about 1,200 perspective types and forms documented in the Dictionary of Perspective.

Digital Perspective

Digital Perspective is a broad term encompassing digital imaging, image processing, virtual and augmented reality, virtual production, interactive media and other forms of New Media Perspective. It is closely linked with developments including CAD, GIS, medical imaging, CGI, computer vision and AI.

Computer Perspective covers perspective views, images and models generated, analysed or manipulated through systems including CAD, CGI, ray tracing, computer and robotic vision, video games, scientific modelling and virtual environments.

Why perspective?

Perspective provides powerful means to visualise, model and develop solutions to problems of extraordinary scale, scope, depth, context, detail and accuracy. It enables new ways of viewing, matching and representing spatial reality, creating convincing illusions of space and experiences of apparent immersion. Learn more about the functions of perspective.

Perspective has not been chosen arbitrarily as the intellectual prism through which the PRC examines vision, projection, perception and representation. It acts as a fundamental linking process between spatial reality and the ways it is viewed, optically imaged, projected, perceived, transformed and represented. It is therefore not merely one topic among several related subjects, but a primary means through which their relationships can be examined and integrated.

A subject in need of clarification

Perspective theory remains only partially documented, new technological forms continue to emerge, and fundamental theoretical questions remain unresolved. Its terminology is particularly problematic, frequently giving one concept several names—or one name to different, even opposing, ideas.

The task is therefore not simply to collect more information, but to clarify relationships, recover overlooked principles, resolve errors and misconceptions, and develop a more integrated theory linking spatial reality, visual experience and representation.

The PRC in numbers

The PRC has produced more than three million words on perspective, including the 350,000-word Dictionary of Perspective.

The PRC’s research, publications and collections include approximately 375 specialist web pages, 1,200 perspective types and forms, 5,000 library volumes, 15,000 bibliographic titles and 4,000+ dictionary terms.

View the full-size 1,000 Types and Forms of Perspective poster → (PDF, 58 KB)

Read a free 40-page sample: Dictionary of Perspective → (2 MB PDF).

A conceptual diagram showing the seven analytical levels through which a perspective system or image may be analysed: Category, Class, Type, Form, Phenomenon, Function and Product.

Perspective Category Theory

Perspective Category Theory (PCT) is an integrated theory of projection, vision, perception and representation, examining them as interconnected processes through which spatial reality is viewed, imaged, experienced, transformed and represented.

PCT analyses these relationships through seven levels—Category, Class, Type, Form, Phenomenon, Function and Product—providing a conceptual structure for examining established principles, unresolved problems and new perspective phenomena together.

Library, bibliography and archives 

The Library of Perspective contains approximately 5,000 physical volumes, thousands of digital publications and an extensive image archive. Download the Library of Perspective Catalogue → (PDF, 66 MB)

The PRC also provides open access to the multi-volume  Encyclopedia of Perspective and the Bibliography of Perspective, which comprises around 15,000 titles and has been developed over more than 70 years from the work of Luigi Vagnetti and Kim Veltman. The Centre also preserves Professor Kim Veltman’s archive of 400 publications on perspective, visual knowledge, Leonardo da Vinci, media theory and the history of science.

Teaching Perspective 

The PRC examines not only how perspective is taught, but which underlying geometrical principles are actually explained. Recent research comparing 87 teaching sources reveals significant differences between the teaching of familiar procedures and the underlying geometrical principles on which they depend.

Explore Perspective Teaching Research →
View the 87-Source Teaching Audit →

Explore Perspective

A master navigation index to the principal categories, types, forms, concepts, methods, phenomena and resources of perspective.

Start Here &
Framework
Applications of Perspective →Axioms of Perspective → Basic Drawing → Dictionary →Explore Types and Forms → Perspective Function →Goals of Perspective → Introduction to Perspective → New Types of Perspective → Perspective and 3-D Space → Definition of Perspective → Perspective Drawing → What does Perspective Mean? → Perspective Method → Perspective Phenomena → Perspective Principle → Perspective Research → Perspective System → Perspective Theory → Science of Perspective →Taxonomy of Perspective → Topics A–Z → Types and Forms of Perspective →Types of Perspective → What Is Perspective? → Perspective Framework →
Perspective Category
Theory
Artificial Perspective → Perspective Category → Category Chaining → Category Overloading →Class Chaining →Class Overloading → Perspective Class → Combined Perspective → Composite Perspective → Perspective Form → Graphical Perspective → Instrument Perspective → Mathematical Perspective → Mixed Perspective → Natural Perspective → New Media Perspective → Optical Perspective → Perspective Category Theory → Projecting → Simulated Perspective →Single Perspective → Technical Perspective → Perspective Type → Viewing / Imaging → Visual Perspective → Visual Type 1 → Visual Type 2 → Categorical Ambiguity →
Central & Linear
Perspective
Angular → Central Perspective → Five-Point → Four-Point → Frontal → Linear Perspective → Multi-Point Perspective → One-Point Perspective → Orthogonal Lines → Rectilinear → Renaissance → Six-Point → Three-Point Perspective → Two-Point Perspective → Unlimited-Point → Window →
Parallel & Technical
Projection
Axonometric Perspective → Cabinet → Cavalier → Descriptive Geometry → Dimetric Perspective → First-Angle → Isometric Perspective → Military → Multiview → Oblique → Orthographic → Parallel → Third-Angle → Trimetric Perspective →
Curvilinear &
Alternative Forms
360-Degree Perspective → Anamorphic Perspective → Anamorphosis → Axial → Circular → Curvilinear Perspective → Cylindrical → Fishbone → Fisheye →Manifold Perspective → Non-Linear → Panoramic → Reverse / Inverse / Negative → Spherical Perspective →
Core Geometry &
Spatial Reference
2D and 3D Space →Centre of Projection → Direction of Vision →Directing Line →Directing Plane → Directional Reference Line → Directional Reference Plane → Eye Level → Eye Point → Field of View → Geometrical Horizon → Ground Plane → Horizon Line → Horizon Plane → Image Space → Object Space → Picture Plane →Perspective Space → Projection Ray → Sight Line → Station Point → Visual Element of a System → Visual Field → Visual Ray → Viewpoint →Viewing Direction →Primary and Secondary Geometry →
Vanishing & Direction
Aspect Vanishing → Central VP → Combined Vanishing → Directional Line Vanishing → Directional Plane Vanishing → Directional Vanishing → Geometrical Vanishing → Lateral VP → Optical Vanishing → Optical versus Geometrical Vanishing → Plane Collapse Condition → Plane-Collapse Line → Vanishing Line → Vanishing Point → Vanishing Trace → Vertical Convergence → Vertical VP → Vanishing Structures →
Vision, Appearance &
Phenomena
3D Display Systems → 3D Vision → Acuity Perspective → Aspect Foreshortening → Atmospheric Perspective → Binocular Disparity → Binocular Perspective → Binocular Vision →Chiaroscuro Perspective → Colour Perspective → Depth Cues → Depth Perception → Diminution of Form → Diminution of Size → Foreshortening → Human Vision → Lateral Distortion → Occlusion / Overlap → Perspectival Foreshortening → Perspective and Spatial Immersion → Perspective Distortion → Perspective of Form → Retinal Image → Stereoscopic → Visual Perception →
Optical, Camera &
Imaging
Anamorphic Lens → Camera Calibration → Camera Obscura → Camera Optics → Camera Perspective → Camera Projection → Depth of Field → Focal Length → Lens Distortion → Mirror Perspective → Optical Illusion → Optical Special Effects → Optics and Imaging Systems → Perspective Photography → Pinhole Perspective → Scientific and Technical Imaging → Scientific Imaging → Shadow Perspective →
Digital & New Media
3D Reconstruction → AI Perspective → Augmented Reality → CAD Perspective → CGI Perspective → Computer Graphics → Computer Perspective → Computer Vision → Digital Imaging → Digital Perspective → Extended Reality → GIS Perspective → Mixed Reality → Projective Transformation → Transform / Homography → Virtual Perspective → Virtual Reality →
Simulation, Illusion &
Applications
3D Drawing → Accelerated → Ames Room → Anamorphic Cinema → Apparent Immersion → Architectural Perspective →Blended Perspective → Cartography → Cinema Perspective → Decelerated → Engineering Drawing → Engineering Perspective → Forced Perspective → Illusions of Space → Illusory Perspective → Stage / Theatre →Synthetic Perspective →
Construction &
Measurement
Central Projection → Distance Point → History of Perspective → Measured Perspective → Measuring Point → Parallel Projection → Perspective Construction → Perspective Geometry → Perspective Grid → Perspective Projection → Plan-and-Elevation → Projective Geometry → Vanishing-Point Method → Perspective Transformation →Perspective Projection Mode →
Errors, Problems &
Clarification
Common Errors in Perspective Theory, History and Teaching → Perspective Errors and Misconceptions → Errors of Definition, Terminology and Classification → Fundamental Problem of Perspective, Vision and Representation → General Errors & Misconceptions in Perspective → The Hidden Fallacies of One-Point Perspective →
History & Development
2D Perspective → 3D Perspective → Ancient Perspective → Celestial Globe → Leonardo da Vinci and Perspective →
Key PRC Problems &
Concepts
Equivalence / Correspondence Problem → Scale–Shape–Size Problem → Shape-Sufficiency Problem → Sphere of Revolution → Sphere of Vision → The Visual Element of the System and Directional Reference Line →
Library, Indexes &
Resources
1,000 Types and Forms of Perspective Poster → 87-Source Foundational Concepts Teaching Coverage Audit → Bibliography of Perspective → Dictionary of Perspective — Free 40-Page Sample → Encyclopedia of Perspective → Kim Veltman Archive → Library of Perspective → Library of Perspective Catalogue → One-Point Perspective Teaching Audit → Talks & Courses →
Image Chains &
Direction
Captured Perspective Image → Image Chain (Optical) → Imaging or Viewing Perspective → Intermediate Perspective → Intermediate Space → Intermediate Spatial Reality → Perspective Direction →Perspective Image / View →Perspective Object / Scene →Perspective Process →Perspective Product → Perspective Image — Captured → Perspective Image — Projected → Perspective Imager / Ray Sorter → Projecting Class / Projection Perspective → Ray Imager → Two Directions of Perspective → Optical Image Chain →Perspective Image Chain →
Scale, Resolution &
Limits
Limits of Exactness in Perspective → Mathematically Equivalent Perspective(s) → Perspective Scale → Perspective Scale Resolution → Problem of Reality → Problem of Scale → Problem of Time → Problem of Viewpoint → Projection Scale → Projection Scale Resolution → Reconstructed Perspective(s) → Visual Angles Problem → Optical Resolution →
Perspective Phenomena &
Factors
Environmental Perspective → Image Facets → Optical Facet → Perspective Image Facet → Perspective of Form → Perspective Phenomena → Perspective Phenomena — Form / Geometry → Perspective Phenomena — Human Perception → Perspective Phenomena (Type 1: Environmental Factors) → Perspective Phenomena (Type 2: Extrinsic Factors) → Perspective Phenomena (Type 3: Intrinsic Factors) → Visual Effects of the Visual Element → Perspective Phenomena (Types 1, 2, 3) →
Horizons &
Vanishing Limits
Apparently Infinite Horizon Line → Circular Horizon Types → Geometrical Vanishing Limit → Horizon — Dual Reality → Local Horizon Types → Medium-Distance Horizon → Multiple Horizon Lines → Non-Infinite Horizon → Optical Horizon Line → Optical Vanishing Limit → Primary / Principal Horizon Line → Secondary / Auxiliary Horizon Line → Transverse / Vertical Horizon Line → Vanishing Sphere — Geometrical → Vanishing Sphere — Optical →