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Effect of Spatial Frequency on Chromatic Induction

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Induction refers to the change of the color appearance of a light caused by the presence of neighboring lights. There are two major types of induction: color contrast, which occurs when the color appearance of a light shifts away from the color of the neighboring lights; and color assimilation, which occurs when the color appearance of a light shifts toward the color of the neighboring lights.

Previous studies reported that spatial properties are the main factor determining the transition from assimilation to contrast. With high spatial frequency stimuli, assimilation occurs. With low spatial frequency stimuli contrast occurs. With intermediate spatial frequencies, variable effects are seen. The purpose of this study is to investigate the mechanisms of the induction. To achieve this goal we measured the induction effects for different stimulus spatial frequencies (0.8, 4.0, 6.0, and 9.0 cpd) to determine the transitional spatial frequency between assimilation and contrast. The use of a cone excitation space allows analysis of the spatial frequency effects on SWS and LWS/MWS cones chromatic pathways separately. A spread light model was developed to see whether optical factors might account for all or part of the assimilation effect.
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Document Type: Research Article

Publication date: January 1, 1995

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  • CIC is the premier annual technical gathering for scientists, technologists, and engineers working in the areas of color science and systems, and their application to color imaging. Participants represent disciplines ranging from psychophysics, optical physics, image processing, color science to graphic arts, systems engineering, and hardware and software development. While a broad mix of professional interests is the hallmark of these conferences, the focus is color. CICs traditionally offer two days of short courses followed by three days of technical sessions that include three keynotes, an evening lecture, a vibrant interactive (poster) papers session, and workshops. An endearing symbol of the meeting is the Cactus Award, given each year to the author(s) of the best interactive paper; there are also Best Paper and Best Student Paper awards.

    Please note: for Purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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