Filters: Collection: "ir_uspace"
1 - 25 of 9
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
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Harrison, Reid R. | Biologically inspired analog IC for visual collision detection | We have designed and tested a single-chip analog VLSI sensor that detects imminent collisions by measuring radially expanding optic flow. The design of the chip is based on a model proposed to explain leg-extension behavior in flies during landing approaches. We evaluated a detailed version of thi... | Visual collision detection; VLSI | 2005-11 |
| 2 |
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Angelucci, Alessandra; Lund, Jennifer S. | Circuits for local and global signal integration in primary visual cortex | Contrast-dependent changes in spatial summation and contextual modulation of primary visual cortex (V1) neuron responses to stimulation of their receptive field reveal long-distance integration of visual signals within V1, well beyond the classical receptive field (cRF) of single neurons. To identif... | Primary Visual Cortex; Extrastriate Cortex; Feed-back Connections; Lateral Connections; SUrround Modulation; Macaque | 2002-10-01 |
| 3 |
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Faugeras, Olivier Dominique | Digital color image processing and psychophysics within the framework of a human visual model | A three-dimensional homomorphic model of human color vision based on neurophysiological and psychophysical evidence is presented. This model permits the quantitative definition of perceptually important parameters such as brightness. saturation, huo and strength. By modelling neural interaction in t... | Human visual model; Neurophysiological evidence; Psychophysical evidence | 1977 |
| 4 |
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Baxter, Brent S. | Image processing in the human visual system | This work extends the multiplicative visual model to include image texture as suggested by experiments [Campbell, Weisel] linking a low resolution Fourier analysis with neurons in certain parts of the visual cortex. The new model takes image texture into account in the sense that weak texture is acc... | Human visual system; Image texture | 1975 |
| 5 |
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Harrison, Reid R. | Low-power analog VLSI visual collision detector | We have designed and tested a single-chip analog VLSI sensor that detects imminent collisions by measuring radially expansive optic flow. The design of the chip is based on a model proposed to explain leg-extension behavior in flies during landing approaches. A new elementary motion detector (EMD) c... | VLSI; Visual collision detection; Elementary motion detectors | 2004-01-01 |
| 6 |
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Normann, Richard A.; Horch, Kenneth W.; Cha, Kichul | Mobility performance with a pixelized vision system | A visual prosthesis, based on electrical stimulation of the visual cortex, has been suggested as a means for partially restoring functional vision in the blind. The prosthesis would create a pixelized visual sense consisting of punctate spots of light (phosphenes). The present study investigated the... | Visual Prosthesis; Mobility; Phosphene Simulator | 1992 |
| 7 |
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Horch, Kenneth W.; Normann, Richard A. | Noble metal penetrating cortical stimulating electrode array: preliminary results | Electrical stimulation of the visual cortex causes subjects to see spots of light (phosphenes) in their visual fields. We have developed arrays of penetrating electrodes which may from the basis of a visual prosthesis centered around electrical stimulation of the visual cortex. These arrays have bee... | Visual prosthesis | 1988 |
| 8 |
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Allen, Edgar S. | Sensory information processing and symbolic computation (1 Jan. 1975 - 30 June 1975) | This research uses digital computation to investigate processes, both linear and nonlinear, for the filtering. restoration, enhancement, bandwidth reduction, distortion immunization and analysis of both visual and auditory information. | Sensory information processing; Symbolic computation; Auditory information; Visual information | 1973 |
| 9 |
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Horch, Kenneth W.; Normann, Richard A. | Simulation of a phosphene field based visual prosthesis | A visual prosthesis for the blind based upon electrical stimulation of the visual cortex requires the development of an array of electrodes. To establish design specifications for such an electrode array, we have conducted psychophysical experiments with normally sighted subjects wearing a portable... | Visual prosthesis; Phosphene simulator | 1990 |
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