Perceptual and neural untangling of surface-illuminant ambiguity
نویسندگان
چکیده
منابع مشابه
Surface-illuminant ambiguity and color constancy: effects of scene complexity and depth cues.
Two experiments were conducted to study how scene complexity and cues to depth affect human color constancy. Specifically, two levels of scene complexity were compared. The low-complexity scene contained two walls with the same surface reflectance and a test patch which provided no information about the illuminant. In addition to the surfaces visible in the low-complexity scene, the high-comple...
متن کاملA Neural Signature Encoding Decisions under Perceptual Ambiguity
People often make perceptual decisions with ambiguous information, but it remains unclear whether the brain has a common neural substrate that encodes various forms of perceptual ambiguity. Here, we used three types of perceptually ambiguous stimuli as well as task instructions to examine the neural basis for both stimulus-driven and task-driven perceptual ambiguity. We identified a neural sign...
متن کاملA neural basis for inference in perceptual ambiguity.
When looking at ambiguous visual stimuli, the observer experiences frequent spontaneous transitions between two competing percepts while physical stimulation remains unchanged. Despite recent advances in understanding the neural processes underlying such perceptual rivalry, a key question has remained unresolved: Does perceptual rivalry result merely from local bistability of neural activity pa...
متن کاملLinear models of surface and illuminant spectra.
We describe procedures for creating efficient spectral representations for color. The representations generalize conventional tristimulus representations, which are based on the peripheral encoding by the human eye. We use low-dimensional linear models to approximate the spectral properties of surfaces and illuminants with respect to a collection of sensing devices. We choose the linear-model b...
متن کاملVagueness, Ambiguity and Perceptual Bistability
1. Introduction. While vagueness and ambiguity have been opposed in the semantic domain (vagueness is often described as meaning underdetermination, ambiguity as meaning overdetermi-nation, see Fine 1975; moreover, vagueness is fundamentally a property of concepts, ambiguity a property of stimuli or expressions), Raffman has made the suggestion that within soritical series, borderline cases typ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Vision
سال: 2017
ISSN: 1534-7362
DOI: 10.1167/17.15.9