Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008. / Vela, Patricio, Committee Member ; Tannenbaum, Allen, Committee Member ; Yezzi, Anthony, Committee Chair ; Turk, Greg, Committee Member ; Lanterman, Aaron, Committee Member.

Thesis (M.S. in psychology)--Washington State University, May 2007. / Includes bibliographical references (p. 19-21).

M.Sc. / MANTIS, which is the acronym for "Motion Analysis and Tracking Integrated System", was originally conceived as part of the Interactive Visual-Event Scheduling tool (IVIS). MANTIS is used as an interpreter of and to interface between the vision system, which monitors the visual objects on the shop floor, and the physical-environment manager. MANTIS uses object behaviour models in order to validate the motion of each object and to identify exceptions in this regard. The physical-environment manager then further evaluates this information in relation to other data which it collects and passes on to the Dynamic Scheduling System. It also tracks the objects on the shop floor and uses this information to generate a kinematics model for each object which, in turn, is used to track the object, as well as to predict its position in the next frame. The main reasons for the predictions are to provide the vision system with pertinent information which it can use in order to improve its efficiency and accuracy by reducing its search space and providing additional information to be used in weighing close matches of objects up against each other. In order to accomplish all this, MANTIS needs to define the behavior model of an object and the valid margins for each model. These models are then used for the validation, tracking and prediction of each object's motion on the shop floor, thereby providing real-time feedback to the scheduling system, which then uses this data to maintain its Master Production Schedule.

The problem of this study was to determine if athletes representative of open skills differ from athletes representative of closed skills in the perceptual style of field independence. It was hypothesized that differences in perceptual style exist between athletes of open and closed skills, and between athletes and non-athletes. This study also investigated perceptual differences: between advanced athletes and less-advanced athletes; between basketball positional groups; and between different sports of hockey, basketball, swimming, and gymnastics. A total of sixty-one male university students were tested for field independence by use of the rod and frame test (RFT) and the group embedded figures test (GEFT), as well as tested on a visual search test (VST). Scores from the tests were placed into groups, each group having a mean and standard deviation score for each of the tests. RFT mean scores were computed for absolute error (AE), variable error (VE), and constant error (CE). Correct numbers identified and numbers missed were analyzed from the VST. The GEFT score was the number of correctly identified figures. F-ratios for multivariate tests of equality of mean vectors were computed for the groups: Open-Closed; Athlete-Non-athlete; Advanced-Less-advanced; Outside-Inside basketball positional groups; Hockey-Basketball; and Gymnastic-Swimming. Results from this study showed:(1)Open skill athletes (Hockey and Basketball players) do not differ in perceptual style from closed skill athletes (Gymnasts and Swimmers); (2) athletes do not differ significantly from non-athletes in measures of field independence; (3) individual univariate tests between the variables from the GEFT and RFT (AE, VE) showed that the basketball group was more field independent than the hockey group; and (4) the amount of shared variance between the two tests of field independence (RFT and GEFT) was low (less than 1270) and limits the above conclusions. / Education, Faculty of / Curriculum and Pedagogy (EDCP), Department of / Graduate

Despite enormous informational complexity in the optical environment, the visual world is effortlessly seen as coherent. Indeed, an object may change in virtually all of its physical properties and in its spatial location and yet maintain a constant perceptual identity. Apparently pieces of information registered in different segments of space-time, but referring to the same object, are perceptually integrated. Kahneman, Treisman and Gibbs (in progress) explored the cognitive organization corresponding to this perceptual organization; the present thesis represents an extension of their work. To study the spatiotemporal integration of information regarding moving objects they developed the preview paradigm. The prototypical visual display of this paradigm consists of three phases: (a) Letters are presented, each within a line-figure object, and are then removed (field-1), (b) the empty objects move to new positions, (c) letters are again presented in the objects and a marker appears, cueing one of them (field-2). The task is to name the letter in the cued object. The critical reaction time (RT) comparison is between consistent conditions (the target letter is previewed in the target object) and inconsistent conditions (the target letter is previewed, but in another object). An RT advantage for consistent conditions is termed the object effect because it represents object-specific facilitation. Object effects were generated in many experiments, including one utilizing only apparent motion to create objects. Certain experiments suggested that the object effect does not occur at a lexical or semantic level, but involves information concerning physical properties. The present thesis further explores the physical nature of the information integration underlying the object effect. Preview experiments were conducted, typically not with a letter-naming task, but with tasks requiring stimulus identification on the basis of a particular physical property. In experiments utilizing four moving line figures, object effects were obtained with presence and size. These effects were not artifacts of attending to field-1 or of confusing field-1 with field-2. In experiments utilizing apparent motion, object effects were obtained with color and with letters. Duodimension experiments elaborated the paradigm by introducing variation on a response-irrelevant dimension. The presence object effect was reduced by response-irrelevant shape inconsistency; the size object effect was eliminated by response-irrelevant shape inconsistency; the color object effect was unaffected by response-irrelevant letter-shape inconsistency; the letter object effect was slightly reduced by response-irrelevant color inconsistency. The duodimension results suggest that the object-specific representation underlying the object effect consists of somewhat conjoined properties. This has implications for the role of attention in the object effect, and inspires the speculation that motion might be special with respect to attention. Accounts of the object effect rival to Kahneman et al.'s can be proposed: that it results from the integration of response tendencies rather than stimulus information, that it is based on a decrease in apparent distance between stimuli rather than on their unitization, and that its seeming retroactivity is an illusion produced by the relative quickness with which low spatial frequencies are processed. The present results support arguments against each of these accounts. The general conclusion of this thesis is that the spatiotemporal integration underlying the object effect does involve information about physical properties. / Arts, Faculty of / Psychology, Department of / Graduate

No description available.

No description available.

Thesis (Ph. D.)--University of Alabama at Birmingham, 2008. / Title from PDF title page (viewed Mar. 30, 2010). Additional advisors: Franklin R. Amthor, James E. Cox, Timothy J. Gawne, Rosalyn E. Weller. Includes bibliographical references (p. 104-114).

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 1977 / Bibliography : p. 248-254. / Ph. D. / Ph. D. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science

published_or_final_version / Psychology / Master / Master of Philosophy