Abstract
Light at the boundary of a uniform test field ( contrast) has a qualitatively different effect on color perception than light in more remote noncontiguous regions ( context). Basic properties of color perception with contextual short-wavelength light are assessed here with a 1° test field surrounded by either contiguous or noncontiguous 440 or 491 nm light (32 td). Contrasting stimuli are 3 or 5° adapting fields, a thin 1° i.d.–2° o.d. (0.5° wide) contiguous band, or a large 1° i.d.–5° o.d. contiguous surround. Contextual stimuli are a remote 3° i.d.–5° o.d. ring or 0.5° wide noncontiguous bands at various distances from the edge of the 1° test field (2° i.d.–3° o.d., 3° i.d.–4° o.d., or 4° i.d.–5° o.d. bands). Contiguous surrounds have little influence on color appearance, but remote noncontiguous short-wavelength light strong affects the color of the test field, shifting it toward redness. The shift toward redness increases as a thin 440 nm band is moved farther from the test field (up to 5°), unlike the effect of distance on remote middle- and long-wavelength bands. Measurements comparing the effects of 440 nm and luminance-equated 491 nm light indicate a contribution from S cones.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
