Experiments In Visual Localization
DOWNLOAD
Download Experiments In Visual Localization PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Experiments In Visual Localization book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Experiments In Visual Localization
DOWNLOAD
Author : Leonard Matin
language : en
Publisher:
Release Date : 1982
Experiments In Visual Localization written by Leonard Matin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
For an observer viewing in a normally-illuminated and structured visual field EEPI-driven cancellation mechanisms are not normally involved in the determination of visual localization of objects in the visual field either relative to each other or relative to visual norms such as the perceived eye-level horizontal or perceived median plane. In darkness EEPI-driven cancellation mechanisms play a central role in determining visual localization of objects relative to visual norms. EEPI-driven cancellation mechanisms play a central role in intersensory localization (e.g. matching locations of sound and light) in either darkness or light if visual capture of the sensory information regarding location via the other modality is prevented. In normally-illuminated visual fields EEPI is not suppressed. Nor is the output of the cancellation mechanism. However, what is suppressed in the normally-illuminated field is the involvement of EEPI in visual localization. Thus under some conditions the EEPI-driven cancellation mechanism may remain involved in other aspects of perception such as a comparison of localization of auditory and visual targets although it has no influence on visual localization.
Orthogonal Localization Of Visual Objects
DOWNLOAD
Author : Jaakko Järvinen
language : fi
Publisher:
Release Date : 1969
Orthogonal Localization Of Visual Objects written by Jaakko Järvinen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.
Egocentric Visual Localization In Normals And Partially Blind During A Change In Direction Of Gravitoinertial Force
DOWNLOAD
Author : Brant Clark
language : en
Publisher:
Release Date : 1967
Egocentric Visual Localization In Normals And Partially Blind During A Change In Direction Of Gravitoinertial Force written by Brant Clark and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Centripetal force categories.
The purpose of this experiment was to compare the interactions of visual and nonvisual information during the perception of the visual horizontal in twelve normal and seven partially blind observers during exposure to centripetal force. Both the normal and the partially blind observers had normal vestibular functions. The observers set a collimated, luminous line to the horizon in darkness while they sat in a cockpit 20 feet from the center of rotation. Settings were made with the device stationary and during rotation at three velocities. The results show negligible differences between the normals and the partially blind for all conditions. Both groups showed minimal errors during the static series both before and after rotation and during rotation the settings were very close to the resultant horizontal. It was concluded that interaction between visual and nonvisual information is possible with extremely limited central vision. (Author).
Effect Of Head Movement In Visual Kinesthetic Localization
DOWNLOAD
Author : A. V. Churchill
language : en
Publisher:
Release Date : 1969
Effect Of Head Movement In Visual Kinesthetic Localization written by A. V. Churchill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.
The results of a previous experiment showed that visual estimates of kinesthetic localization and kinesthetic estimates of visual localization were equally accurate, but with errors in opposite directions, when S was free to move his head. The present experiment was designed to measure the contribution of head movement to the accuracy of visual and kinesthetic localization. (Author).
Visual Localization Accuracy Determines The Bias Of Auditory Targets In Azimuth And Depth
DOWNLOAD
Author : Amanda L. Bowen
language : en
Publisher:
Release Date : 2010
Visual Localization Accuracy Determines The Bias Of Auditory Targets In Azimuth And Depth written by Amanda L. Bowen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Visual bias is a psychophysical phenomenon where an accurately localized signal, such as a light, will bias a spatially discrepant signal that is localized with less accuracy, such as a sound, when the two signals are perceived as unified. Many previous studies have demonstrated visual bias in azimuth, but none have directly tested, or found, this effect in depth. By increasing the saliency of the auditory and visual signals from a previous experiment, the current study was able to produce more accurate depth discrimination. Visual localization error was smaller than that of auditory localization error in both azimuth and depth, and visual bias was demonstrated in both dimensions. Additionally, visual localization accuracy was positively correlated to visual bias on perceived unified trials.
Egocentric Visual Localization In Normals And Partially Blind During A Change In Direction Of Gravitoinertial Force
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1967
Egocentric Visual Localization In Normals And Partially Blind During A Change In Direction Of Gravitoinertial Force written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.
The purpose of this experiment was to compare the interactions of visual and nonvisual information during the perception of the visual horizontal in twelve normal and seven partially blind observers during exposure to centripetal force. Both the normal and the partially blind observers had normal vestibular functions. The observers set a collimated, luminous line to the horizon in darkness while they sat in a cockpit 20 feet from the center of rotation. Settings were made with the device stationary and during rotation at three velocities. The results show negligible differences between the normals and the partially blind for all conditions. Both groups showed minimal errors during the static series both before and after rotation and during rotation the settings were very close to the resultant horizontal. It was concluded that interaction between visual and nonvisual information is possible with extremely limited central vision. (Author).
Egocentric Visual Localization In Normals And Partially Blind During A Change In Direction Of Gravitoinertial Force
DOWNLOAD
Author : Brant Clark
language : en
Publisher:
Release Date : 1967
Egocentric Visual Localization In Normals And Partially Blind During A Change In Direction Of Gravitoinertial Force written by Brant Clark and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.
The purpose of this experiment was to compare the interactions of visual and nonvisual information during the perception of the visual horizontal in twelve normal and seven partially blind observers during exposure to centripetal force. Both the normal and the partially blind observers had normal vestibular functions. The observers set a collimated, luminous line to the horizon in darkness while they sat in a cockpit 20 feet from the center of rotation. Settings were made with the device stationary and during rotation at three velocities. The results show negligible differences between the normals and the partially blind for all conditions. Both groups showed minimal errors during the static series both before and after rotation and during rotation the settings were very close to the resultant horizontal. It was concluded that interaction between visual and nonvisual information is possible with extremely limited central vision. (Author).
Visual Egocentric Localization An Experimental Study
DOWNLOAD
Author : Jan H. Bruell
language : en
Publisher:
Release Date : 1953
Visual Egocentric Localization An Experimental Study written by Jan H. Bruell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with Perception categories.
Spatiotemporal Characteristics Of Visual Localization
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1990
Spatiotemporal Characteristics Of Visual Localization written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
Psychophysical experiments were conducted to investigate how the human visual system determines the spatial structure of a visual scene. The theoretical basis of the research centers on three ideas: that local spatial filters constitute an initial stage of contrast-encoding; that the properties of these initial filters can affect accuracy of the judgements of the perceived separation; and that the actual encoding of interobject separation occurs at a higher level of processing with its own properties. the properties of the higher levels of processing can be determined by controlling the input from the local spatial filters. Unlike thresholds that are determined primarily at lower levels of processing, thresholds for spatial relationships were found to be highly sensitive to the context in which the stimuli are presented and highly insensitive to those spatial and temporal characteristics that are known to play major roles in the determination of contrast detection thresholds. Context was found to affect both the threshold and the perceived value of interobject separations. Furthermore, the effects of context vary over time, being profound at short durations (100 ms) and small or negligible at long durations (500 ms). The effects of context on the accuracy of judgements of spatial relationships at brief durations were found to depend on the spatial proximity and spatial similarity of the targets and the background context.
Spatiotemporal Characteristics Of Visual Localization Phase 2
DOWNLOAD
Author : Christina A. Burbeck
language : en
Publisher:
Release Date : 1987
Spatiotemporal Characteristics Of Visual Localization Phase 2 written by Christina A. Burbeck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
The spatial and temporal characteristics of human visual localization are studied using psychophysical techniques. The primary tasks studied are frequency discrimination and distance judgments in the plane perpendicular o the observer's line of sight. It is found that these tasks cannot be performed directly on the basis of simple transformations of the retinal image, but depend on stimulus context and on judgment of stimulus depth. Experiments are designed to isolate the process underlying these distance and size judgments from more distal visual processes. One prominent finding is that the localization process is remarkably insensitive to those aspects of the stimulus that most affect contrast detection thresholds. Keywords: Human vision; Visual psychophysics; Visual spatial localization.