Multiple object tracking (MOT) is an attentional process wherein people track several moving targets among several distractors. Symmetry, an important indicator of regularity, is a general spatial pattern observed in natural and artificial scenes. According to the "laws of perceptual organization" proposed by Gestalt psychologists, regularity is a principle of perceptual grouping, such as simil...

Segregated objects can be sought simultaneously, i.e., mentally "re-grouped." Although the mechanisms underlying such "re-grouping" clearly differ from automatic grouping, it is unclear whether or not the end products of "re-grouping" and automatic grouping are the same. If they are, they would have similar impact on visual organization but would be in conflict. We compared the consequences of ...

Four experiments are reported, the aim of which was to explore the achromatic-colour and distance relations that determine the probability of achromatic surfaces grouping perceptually. The first two experiments were performed to test Wertheimer's conjecture that similarity and dissimilarity of achromatic colours jointly determine grouping. The results indicate that only similarity of achromatic...

The authors investigated whether the gestalt grouping principles can be quantified and whether the conjoint effects of two grouping principles operating at the same time on the same stimuli differ from the sum of their individual effects. After reviewing earlier attempts to discover how grouping principles interact, they developed a probabilistic model of grouping by proximity, which allows mea...

تعد دراسة الشخصيات من الدراسات التاريخية المهمة لما لها دور فاعل وتأثير كبير في الكشف عن الحقائق والاحداث التاريخية، عدة اسباب اهمها هو الدبلوماسية البارزة، توصل البحث النهاية الى العديد الاستنتاجات اذ تميز ابراهيم الولي ان لديه فلسفة والحياة واشتق فلسفته دراسته معهد المعلمين بغداد وبعدها علم الاجتماع والفلسفة كلية الآداب جامعة فؤاد الاول، تميزت شخصيته ومسيرته بأنها سلسة وهادئة وعدم الانخراط ال...

Grouping in vision can be seen as the process that organizes image entities into higher-level structures. Despite its importance, there is little consistency in the statement of the grouping problem in literature. In addition, most grouping algorithms in vision are inspired on a specific technique, rather than being based on desired characteristics, making it cumbersome to compare the behavior ...