منابع مشابه
Illuminating Mental Representations through Speech and Gesture
Can the gestures people produce when describing algebra word problems offer insight into their mental representations of the problems? Twenty adults were asked to describe six word problems about constant change, and then to talk aloud as they solved the problems. Two problems depicted continuous change, two depicted discrete change, and two depicted change that could be construed as either con...
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At the base level of creative practice, artists often reap inspiration from their surroundings. Writers might eavesdrop on a conversation in a coffee shop and then use it in a novel, and a composer might transform sounds from his urban environment into an orchestral work. In Kelly Lanphier’s case, working at the Aquarium of the Pacific in Long Beach, California, early on created a substantial i...
متن کاملIlluminating Illumination
We introduce an active imaging method to measure scene illumination. The system implementation is divided into four steps. First, the system acquires two images: one is an ordinary image of the scene under ambient light and the other is a corresponding image in which light from the camera flash is added to the scene. Second, the image pair is analyzed to obtain an image that represents the scen...
متن کاملInto Darkness
Visual navigation of mobile robots has become a core capability that enables many interesting applications from planetary exploration to self-driving cars. While systems built on passive cameras have been shown to be robust in well-lit scenes, they cannot handle the range of conditions associated with a full diurnal cycle. Lidar, which is fairly invariant to ambient lighting conditions, offers ...
متن کاملDarkness filling-in: a neural model of darkness induction
A model of darkness induction based on a neural filling-in mechanism is proposed. The model borrows principles from both Land's Retinex theory and BCS/FCS filling-in model of Grossberg and colleagues. The main novel assumption of the induction model is that darkness filling-in signals, which originate at luminance borders, are partially blocked when they try to cross other borders. The percenta...
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ژورنال
عنوان ژورنال: Nature
سال: 1977
ISSN: 0028-0836,1476-4687
DOI: 10.1038/268274a0