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 Experiment Videos

Color measurement and discrimination.

B A Wandell

    Journal of the Optical Society of America. A, Optics and Image Science
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Color difference measurement predicts light discriminability using vector differences. This hypothesis holds true without luminance but fails when luminance is present, indicating color categories influence perception.

    Related Concept Videos

    You might also read

    Related Articles

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

    Sort by
    Same author

    Stimulus Dependence of Gamma Oscillations in Human Visual Cortex.

    Cerebral cortex (New York, N.Y. : 1991)·2014
    Same author

    The synthesis and analysis of color images.

    IEEE transactions on pattern analysis and machine intelligence·2011
    Same author

    Abnormal retinotopic representations in human visual cortex revealed by fMRI.

    Acta psychologica·2001
    Same author

    Visual areas and spatial summation in human visual cortex.

    Vision research·2001
    Same author

    Scene illuminant classification: brighter is better.

    Journal of the Optical Society of America. A, Optics, image science, and vision·2001
    Same author

    Visualization and measurement of the cortical surface.

    Journal of cognitive neuroscience·2000
    Same journal

    Phase retrieval with prior information.

    Journal of the Optical Society of America. A, Optics and image science·2008
    Same journal

    Clinical microscopy of the cornea utilizing optical sectioning and a high-numerical-aperture objective.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Eye-tracking laser Doppler velocimeter stabilized in two dimensions: principle, design, and construction.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Effects of aging in retinal image quality.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Axial eye-length measurement by wavelength-shift interferometry.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Fractal analysis of steady-state-flicker visual evoked potentials: feasibility.

    Journal of the Optical Society of America. A, Optics and image science·1993
    See all related articles

    Area of Science:

    • Vision Science
    • Color Perception
    • Psychophysics

    Background:

    • Color difference measurement aims to predict visual discriminability.
    • Current theories often model color perception using vector differences in color space.

    Purpose of the Study:

    • To test a color-measurement hypothesis predicting light discriminability based on vector differences.
    • To investigate the role of luminance and color categories in light discrimination.

    Main Methods:

    • Formulating a hypothesis based on vector differences (dU) between light responses (U, U').
    • Testing the hypothesis under conditions with and without a luminance component in the difference stimulus.
    • Analyzing discrimination judgments in relation to color space categories.

    Related Experiment Videos

    Main Results:

    • The vector-difference hypothesis accurately predicts discriminability when no luminance component is present.
    • The hypothesis is invalidated when a luminance component is introduced.
    • Discrimination becomes dependent on whether lights fall into separate categorical regions of color space when luminance is present.

    Conclusions:

    • The simple vector-difference model is insufficient for predicting color discrimination in the presence of luminance.
    • Luminance and categorical color perception significantly impact the discriminability of lights.
    • A more complex model accounting for color categories is needed for accurate color-difference measurement.