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

Shape and Texture of Coarse Aggregate01:25

Shape and Texture of Coarse Aggregate

381
Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
381
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

827
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...
827
Assessment of Airway, Skin Color, and Use of Accessory Muscles01:30

Assessment of Airway, Skin Color, and Use of Accessory Muscles

1.3K
A thorough assessment of respiratory health is paramount in clinical settings to identify and manage respiratory distress and ensure adequate oxygenation. This article elaborates on the critical aspects of respiratory evaluation, including airway assessment, skin color examination, and the observation of accessory muscle use, which are integral to effectively diagnosing and managing patients with respiratory conditions.
Introduction
The initial evaluation of a patient's respiratory system...
1.3K

You might also read

Related Articles

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

Sort by
Same author

Likeness, Familiarity, and the Ambient Portrait Average.

Perception·2020
Same author

Variation and Likeness in Ambient Artistic Portraiture.

Perception·2018
See all related articles

Related Experiment Video

Updated: Nov 26, 2025

Investigating the 'Uncatchable Smile' in Leonardo da Vinci's La Bella Principessa: A Comparison with the Mona Lisa and Pollaiuolo's Portrait of a Girl
07:14

Investigating the 'Uncatchable Smile' in Leonardo da Vinci's La Bella Principessa: A Comparison with the Mona Lisa and Pollaiuolo's Portrait of a Girl

Published on: October 4, 2016

7.2K

Analysing Texture in Portraits.

Susan Hayes1

  • 1University of Wollongong, Australia.

Perception
|December 11, 2020
PubMed
Summary
This summary is machine-generated.

Texture analysis in portraits did not distinguish likeness, unlike shape analysis. Findings suggest lighting and shape-texture interactions influence perceived likeness in portraiture.

Keywords:
eigenfaceseigenpicturesimage pre-processinglikenessportraitureshadingshape-free

More Related Videos

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
07:05

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Published on: June 18, 2021

2.7K
Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

43.3K

Related Experiment Videos

Last Updated: Nov 26, 2025

Investigating the 'Uncatchable Smile' in Leonardo da Vinci's La Bella Principessa: A Comparison with the Mona Lisa and Pollaiuolo's Portrait of a Girl
07:14

Investigating the 'Uncatchable Smile' in Leonardo da Vinci's La Bella Principessa: A Comparison with the Mona Lisa and Pollaiuolo's Portrait of a Girl

Published on: October 4, 2016

7.2K
Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
07:05

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Published on: June 18, 2021

2.7K
Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

43.3K

Area of Science:

  • Computer Vision and Image Analysis
  • Art History and Perception

Background:

  • Previous research (companion paper) utilized principal component analysis (PCA) on portrait shape to assess likeness.
  • This study investigates the role of texture in perceived portrait likeness, comparing it to shape-based assessments.

Purpose of the Study:

  • To explore the relationship between texture depiction in portraits and perceived likeness.
  • To determine if texture-based principal component analysis (PCA) can differentiate between high and low likeness portraits.

Main Methods:

  • Principal component analysis (PCA) applied to portrait texture features.
  • Experimentation with various pre-processing techniques to manage image-level texture variability.
  • Analysis of lighting direction, histogram matching, and shape-texture relationships.

Main Results:

  • Texture PCA failed to discriminate between high and low likeness portraits, even after pre-processing.
  • Linear histogram matching effectively reduced portrait brightness variability.
  • Depicting or exaggerating shading related to lighting direction may enhance likeness; lighting direction can be portrayed anomalously.
  • Shape and texture were found to be interdependent, not independent variables.

Conclusions:

  • Texture, unlike shape, did not prove to be a reliable predictor of perceived likeness in this portrait set.
  • Image registration methods, while useful, may confound texture PCA results under ambient conditions.
  • Further research is needed to understand the complex interplay of shape, texture, and lighting in portrait perception.