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

Production of Formed Elements01:34

Production of Formed Elements

4.7K
Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...
4.7K
Elements and Compounds01:27

Elements and Compounds

104.6K
Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond.
Elements
Elements are classified as atomic or molecular based on the nature of their basic units. They are unique forms of matter with specific chemical and physical properties that cannot break down into smaller substances by ordinary chemical reactions. There...
104.6K
Periodic Classification of the Elements04:00

Periodic Classification of the Elements

59.0K
The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
59.0K
Classification of Elements and Compounds02:54

Classification of Elements and Compounds

73.1K
Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units.
Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...
73.1K
Elements: Chemical Symbols and Isotopes02:31

Elements: Chemical Symbols and Isotopes

125.9K
A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
Some symbols are derived from the common English name of the element; others are abbreviations of the name in another language — Latin, Greek or German. For example, the symbol for aluminum (common name)...
125.9K
Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

24.2K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
24.2K

You might also read

Related Articles

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

Sort by
Same author

Improved autobiographical memory with central thalamic deep brain stimulation in traumatic brain injury.

Brain communications·2026
Same author

Neurophysiological correlates of delayed recovery of consciousness in a critically ill patient with COVID-19 with repeated cardiac arrest.

British journal of anaesthesia·2026
Same author

Rational design of a protein-protein interaction inhibitor that activates Protein Tyrosine Phosphatase 1B.

bioRxiv : the preprint server for biology·2026
Same author

Walks with jumps: a neurobiologically motivated class of paths in the hyperbolic plane.

Journal of mathematical biology·2026
Same author

Rare and varied presentations of plasmablastic lymphoma: A case series.

SAGE open medical case reports·2026
Same author

Residual Foveal Motion Facilitates Processing of Visually Tracked Objects.

bioRxiv : the preprint server for biology·2025
Same journal

Computational and mathematical models in vision: Quantitative approaches to understanding visual perception.

Vision research·2026
Same journal

Complex interactions between lightness, chroma, and hue in color ensemble perception.

Vision research·2026
Same journal

Driving with autism spectrum disorder: Exploring the impact of tactile hazard warnings on gaze behavior and hazard responses.

Vision research·2026
Same journal

Early visual processing in adults with ADHD: evidence from contrast sensitivity, spatial integration, and external noise.

Vision research·2026
Same journal

Pupil reflexes generate the peripheral drift illusion due to ON/OFF motion responses.

Vision research·2026
Same journal

Perceived direction of glass patterns can flip by 90°: A neural model.

Vision research·2026
See all related articles

Related Experiment Video

Updated: Jan 31, 2026

Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends
12:20

Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends

Published on: March 15, 2014

14.9K

Image segmentation driven by elements of form.

Jonathan D Victor1, Syed M Rizvi1, Mary M Conte1

  • 1Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, United States.

Vision Research
|January 7, 2019
PubMed
Summary
This summary is machine-generated.

Complex visual features like closure and convexity drive image segmentation. Our synthetic textures show these features are crucial for visual parsing, even without changes in basic visual cues.

Keywords:
ClosureConvexityCurvatureImage segmentationVisual textures

More Related Videos

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging
06:29

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

Published on: February 15, 2021

3.9K
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

10.2K

Related Experiment Videos

Last Updated: Jan 31, 2026

Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends
12:20

Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends

Published on: March 15, 2014

14.9K
A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging
06:29

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

Published on: February 15, 2021

3.9K
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

10.2K

Area of Science:

  • Visual perception
  • Computational neuroscience
  • Image processing

Background:

  • Early visual processing relies on features like luminance and contrast.
  • The role of complex features such as closure and convexity in image parsing is less understood.
  • Previous research faced challenges in isolating complex features due to confounding elementary features.

Purpose of the Study:

  • To investigate the role of complex visual features (closure, convexity) in image segmentation.
  • To overcome the challenge of isolating complex features from elementary ones.
  • To determine if complex features alone can drive visual segmentation.

Main Methods:

  • Developed synthetic visual textures using tokens with curved or angled elements.
  • Ensured tokens had no edge discontinuities and shape varied with underlying texture correlation.
  • Conducted psychophysical studies using these synthetic textures to measure segmentation responses.

Main Results:

  • Synthetic texture differences, particularly feature occurrences, drove image segmentation.
  • Sensitivity to feature increases and decreases was unequal, unlike lower-level features.
  • Texture segregation depended on token type (curved/angular, filled/outlined), not just correlation structure.

Conclusions:

  • Simple closed contours and convex elements are sufficient to drive image segmentation.
  • Complex features play a significant role in visual parsing, independent of lower-level cues.
  • Asymmetrical sensitivities suggest unique processing mechanisms for complex features.