Results 231 to 240 of about 668,131 (266)
Some of the next articles are maybe not open access.
Visual Detectability of the Convair 580
AIAA Scitech 2019 Forum, 2019AIAA Scitech 2019 Forum, January 7-11, 2019, San Diego, CA ...
Minwalla, Cyrus +2 more
openaire +2 more sources
A model of visual threshold detection
Journal of Theoretical Biology, 1977Abstract A model of visual incremental threshold detection is presented, having the following features. 1. (1) From Crozier's Law we deduce that all thresholds, for conventional as well as for noisy images, are ultimately determined by noise. Other evidence, which is described, supports this conclusion. 2.
G A, Hay, M S, Chesters
openaire +2 more sources
The detection and measurement of visual motion
Pattern Recognition Letters, 1987Abstract The properties of the one and two dimensional Gabor filters are reviewed. These filters are optimally localised in both the image space and frequency space. Spatial frequency and temporal frequency are related by the image plane velocity. These properties are exploited in a filter scheme to detect and measure visual motion.
openaire +1 more source
Mechanisms of visual motion detection
Nature Neuroscience, 2000Visual motion is processed by neurons in primary visual cortex that are sensitive to spatial orientation and speed. Many models of local velocity computation are based on a second stage that pools the outputs of first-stage neurons selective for different orientations, but the nature of this pooling remains controversial.
P R, Schrater +2 more
openaire +2 more sources
Visual marking and change detection
Cognitive Processing, 2007The preview benefit from prior exposure of response-irrelevant (distracter) objects in visual search has been accounted for in terms of top-down inhibition (i.e. visual marking), bottom-up abrupt onset capture, or asynchrony-dependent perceptual segregation.
José L. Herrero +3 more
openaire +2 more sources
Visual Motion Detection in the Cat
Science, 1964Responses of some cells in the cat cortex to moving stimulation depend on direction of motion. These cells give neither "on" nor "off" responses to uniform illumination. Response can be elicited over a wide region of the retina in either eye, and the discharge pattern does not follow the temporal variations in luminance on the retina which accompany ...
G, BAUMGARTNER, J L, BROWN, A, SCHULZ
openaire +2 more sources
A Visual Grammar for Face Detection
2010Several methods have been developed for face detection with certain success, however these tend to fail under difficult conditions such as partial occlusions and changes in orientation and illumination. We propose a novel technique for face detection based on a visual grammar.
Augusto Meléndez +2 more
openaire +2 more sources
Visual detection and visual imagery.
Journal of Experimental Psychology, 1974M J, Peterson, S E, Graham
openaire +2 more sources
Group Visual Relation Detection
IEEE Transactions on Image ProcessingIn this paper, we propose a novel visual relation detection task, named Group Visual Relation Detection (GVRD), for detecting visual relations whose subjects and/or objects are groups (GVRs), inspired by the observation that groups are common in image semantic representation.
Fan Yu 0003 +5 more
openaire +2 more sources
Visual detection using quantum dots sensing platforms
Coordination Chemistry Reviews, 2021David S.M. Ribeiro +2 more
exaly