Jove
Visualize
Contact Us

Related Experiment Videos

A method for computing spectral reflectance.

A Yuille

    Biological Cybernetics
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Perceived object color depends on surface reflectance, not illumination. This study presents a method to determine surface spectral reflectance from color data, even with varying illumination and 3D shapes.

    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

    Mapping the landscape of climate engineering.

    Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2014
    Same author

    An extremum principle for shape from contour.

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

    Efficient multilevel brain tumor segmentation with integrated bayesian model classification.

    IEEE transactions on medical imaging·2008
    Same author

    Stereo and eye movement.

    Biological cybernetics·1989
    Same author

    Analog "neuronal" networks in early vision.

    Proceedings of the National Academy of Sciences of the United States of America·1986
    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

    Area of Science:

    • * Visual perception and computational color science.
    • * Investigating the relationship between illumination, surface reflectance, and perceived color.

    Background:

    • * Perceived object color is generally independent of illumination spectrum.
    • * Surface spectral reflectance is the primary determinant of perceived color.
    • * The problem of determining surface reflectance from color measurements is ill-posed.

    Purpose of the Study:

    • * To develop a method for determining surface spectral reflectance from color observations.
    • * To address the underdetermined problem of color constancy.
    • * To generalize the method for complex scenes with varying illumination and 3D shapes.

    Main Methods:

    • * Representing illumination and surface reflectances using basis functions.

    Related Experiment Videos

  • * Solving a system of nonlinear equations derived from color patch data.
  • * Developing a color edge detector for material change detection in complex scenes.

    • Main Results:

    • * Demonstrated that surface spectral reflectances can be determined up to a scaling factor using multiple surface patches.
    • * Presented a simple method for solving the derived nonlinear equations.
    • * Extended the method to handle spatially varying illumination and three-dimensional objects.

    Conclusions:

    • * A computational framework exists to recover surface spectral reflectance from color data.
    • * The proposed method offers a solution to the color constancy problem.
    • * Color edge detection and inward propagation enable material property estimation in complex visual environments.