Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Gestalt Principles of Perception01:21

Gestalt Principles of Perception

Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
Transformations of Functions III01:20

Transformations of Functions III

Transformations modify the graphical representation of a function without changing its fundamental form. One common transformation is reflection, which flips the graph across a designated axis. When the vertical coordinates of all points are multiplied by the negative one, the entire graph is mirrored over the horizontal axis. This transformation reverses the vertical orientation of peaks and troughs, akin to signal inversion in electrical systems, where a waveform is flipped, but the timing of...
Transformations of Functions I01:29

Transformations of Functions I

A function's graph can be modified by changing its position or size without altering its overall shape. These transformations allow the graph to be moved across the coordinate plane while preserving its pattern and structure. One of the most common transformations is shifting, which repositions the graph without distorting it.When the output of a function is adjusted by adding or subtracting a constant, the graph shifts vertically. A positive value moves the graph upward, while a negative value...
Equivalent Couples01:28

Equivalent Couples

In mechanical engineering, the concept of equivalent couples plays a crucial role in understanding and analyzing various mechanical systems.
Two couples are considered to be equivalent if they produce the same rotational effect on a rigid body. In other words, the two couples have the same magnitude and act in the same direction, causing the same angular displacement or acceleration in the body.
For instance, consider two couples lying in the plane of the page, with one having a pair of equal...
Principle of Equivalence01:18

Principle of Equivalence

According to Albert Einstein (1897-1955), free-falling and feeling weightless are intrinsically linked. If a person were in free-fall under gravity, for example, diving towards the Earth from an airplane, they would feel completely weightless. Similarly, a person descending in a lift may feel partially weightless. Broadly speaking, it is assumed that an object in a uniform gravitational field and an object undergoing constant acceleration in the absence of gravity are under the same...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

AN OUTBREAK OF EXTENSIVELY DRUG-RESISTANT <i>ACINETOBACTER BAUMANNII</i> IN A BELGIAN TERTIARY BURN WOUND CENTER.

Annals of burns and fire disasters·2024
Same author

How robust are clinical trials in primary and secondary ankle sprain prevention?

Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine·2023
Same author

Draft Genome Sequences of 27 Rhizogenic <i>Agrobacterium</i> Biovar 1 Strains, the Causative Agent of Hairy Root Disease.

Microbiology resource announcements·2023
Same author

Back to the Roots: <i>Agrobacterium</i>-Specific Phages Show Potential to Disinfect Nutrient Solution from Hydroponic Greenhouses.

Applied and environmental microbiology·2023
Same author

Isolation, characterization and genome analysis of an orphan phage FoX4 of the new Foxquatrovirus genus.

BMC microbiology·2022
Same author

The relation between visual orienting functions, daily visual behaviour and visuoperceptual performance in children with (suspected) cerebral visual impairment.

Research in developmental disabilities·2021
Same journal

Mind wandering during first- and foreign-language reading.

Psychonomic bulletin & review·2026
Same journal

Lexical word processing is unaffected by rapid invisible frequency tagging in reading: Evidence from eye movements.

Psychonomic bulletin & review·2026
Same journal

Anxiety modulates voluntary attentional orienting to emotional gaze cues: Eye movements for pro- and anti-saccades.

Psychonomic bulletin & review·2026
Same journal

Faster key-press responses to front vowels than back vowels when matching heard vowels with represented vowels.

Psychonomic bulletin & review·2026
Same journal

Testing the interleaving effect without response bias: A forced-choice reevaluation of Kornell and Bjork (2008).

Psychonomic bulletin & review·2026
Same journal

The impact of social interaction on abstract concepts.

Psychonomic bulletin & review·2026
See all related articles

Related Experiment Video

Updated: Jun 4, 2026

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
08:04

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues

Published on: December 4, 2013

Shape equivalence under perspective and projective transformations.

J Wagemans1, C Lamote, L Van Gool

  • 1Department of Psychology, University of Leuven, Tiensestraat 102, B-3000, Leuven, Belgium, johan.wagemans@kuleuven.ac.be.

Psychonomic Bulletin & Review
|February 19, 2011
PubMed
Summary
This summary is machine-generated.

The human visual system perceives differences between perspective and projective shape deformations but does not categorize them distinctly. This study explored how our vision processes these geometric transformations.

More Related Videos

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

Related Experiment Videos

Last Updated: Jun 4, 2026

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
08:04

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues

Published on: December 4, 2013

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

Area of Science:

  • Cognitive psychology
  • Visual perception
  • Computational neuroscience

Background:

  • Oblique viewing of planar shapes induces perspective deformation.
  • The visual system may detect geometric invariants invariant under projective transformations.
  • Distinguishing between perspective and projective deformations is crucial for understanding visual processing.

Purpose of the Study:

  • To investigate the human visual system's ability to differentiate between perspective and projective shape transformations.
  • To determine if these transformations are perceptually treated as distinct categories by the visual system.

Main Methods:

  • Observers performed matching tasks comparing standard patterns with perspective or projective transformations.
  • A direct comparison task assessed preferences between perspectively and projectively related patterns.
  • Analysis focused on performance accuracy and subjective preferences based on transformation parameters (slant, shear).

Main Results:

  • Matching performance was slightly higher for perspective and unrelated patterns (92.6%) compared to projective-random patterns (88.8%).
  • Participants showed a slight preference for perspectively related patterns (58.5%) over projectively related ones.
  • Perceptual differences were observed between perspective and projective transformations, influenced by slant and shear.

Conclusions:

  • The human visual system can discern differences between perspective and projective shape deformations.
  • Despite perceptual distinctions, these transformations are not processed as categorically separate by the visual system.
  • Visual perception of shape transformations is sensitive to specific geometric parameters like slant and shear.