Good Continuation in Layers: Shading flows, color flows, surfaces and shadows

2006 ◽  
Author(s):  
O. Ben-Shahar ◽  
A. Glaser ◽  
S.W. Zucker
Keyword(s):  
Good Continuation

scholarly journals Local and Global Gestalt Laws: A Neurally Based Spectral Approach

2017 ◽  
Vol 29 (2) ◽  
pp. 394-422 ◽  
Author(s):  
Marta Favali ◽  
Giovanna Citti ◽  
Alessandro Sarti
Keyword(s):  
Mathematical Model ◽  
Spectral Analysis ◽  
Group Theory ◽  
Visual Cortex ◽  
Connectivity Matrix ◽  
Spectral Approach ◽  
Good Continuation ◽  
Functional Architecture ◽  
Lie Group Theory ◽  
Gestalt Laws

This letter presents a mathematical model of figure-ground articulation that takes into account both local and global gestalt laws and is compatible with the functional architecture of the primary visual cortex (V1). The local gestalt law of good continuation is described by means of suitable connectivity kernels that are derived from Lie group theory and quantitatively compared with long-range connectivity in V1. Global gestalt constraints are then introduced in terms of spectral analysis of a connectivity matrix derived from these kernels. This analysis performs grouping of local features and individuates perceptual units with the highest salience. Numerical simulations are performed, and results are obtained by applying the technique to a number of stimuli.

scholarly journals The Limiting Case of Amodal Completion: The Phenomenal Salience and the Role of Contrast Polarity

2019 ◽  
Vol 9 (6) ◽  
pp. 149 ◽  
Author(s):  
Pinna ◽  
Conti
Keyword(s):  
Perceptual Organization ◽  
Amodal Completion ◽  
Main Question ◽  
Good Continuation ◽  
Contrast Polarity ◽  
Visual Phenomenon ◽  
Continuous Object ◽  
Limiting Case ◽  
Visual Properties

In this work, we demonstrated unique and relevant visual properties imparted by contrast polarity in perceptual organization and in eliciting amodal completion, which is the vivid completion of a single continuous object of the visible parts of an occluded shape despite portions of its boundary contours not actually being seen. T-junction, good continuation, and closure are considered the main principles involved according to relevant explanations of amodal completion based on the simplicity–Prägnanz principle, Helmholtz’s likelihood, and Bayesian inference. The main interest of these approaches is to explain how the occluded object is completed, what is the amodal shape, and how contours of partially visible fragments are relatable behind an occluder. Different from these perspectives, amodal completion was considered here as a visual phenomenon and not as a process, i.e., the final outcome of perceptual processes and grouping principles. Therefore, the main question we addressed through our stimuli was “What is the role of shape formation and perceptual organization in inducing amodal completion?” To answer this question, novel stimuli, similar to limiting cases and instantiae crucis, were studied through Gestalt experimental phenomenology. The results demonstrated the domination of the contrast polarity against good continuation, T-junctions, and regularity. Moreover, the limiting conditions explored revealed a new kind of junction next to the T- and Y-junctions, respectively responsible for amodal completion and tessellation. We called them I-junctions. The results were theoretically discussed in relation to the previous approaches and in the light of the phenomenal salience imparted by contrast polarity.

scholarly journals Contour grouping: closure effects are explained by good continuation and proximity

2004 ◽  
Vol 44 (24) ◽  
pp. 2769-2777 ◽  
Author(s):  
Tal Tversky ◽  
Wilson S. Geisler ◽  
Jeffrey S. Perry
Keyword(s):  
Good Continuation ◽  
Contour Grouping

Gestalt Theory and Instructional Design

1993 ◽  
Vol 23 (2) ◽  
pp. 137-157 ◽  
Author(s):  
Patrick Moore ◽  
Chad Fitz
Keyword(s):  
Instructional Design ◽  
Visual Presentation ◽  
Gestalt Theory ◽  
Good Continuation ◽  
Gestalt Principles ◽  
Powerful Approach ◽  
Visual Dimension

Research on the visual presentation of instructions (and other texts) tends to be repetitious, unsystematic, and overly complex. A simpler yet rich approach to analyzing the visual dimension of instructions is Gestalt theory. Gestalt principles of proximity, closure, symmetry, figure-ground segregation, good continuation, and similarity provide a powerful approach to making instructions more inviting and consistent, as well as easier to access, follow, and understand. This article applies six Gestalt principles to a badly designed instruction to show what improvements result when Gestalt theory is considered in instructional design.

The Dialectic of Good Continuation in Tonal Music

1985 ◽  
Vol 4 (1/2) ◽  
pp. 5 ◽  
Author(s):  
Richmond Browne
Keyword(s):  
Good Continuation ◽  
Tonal Music

scholarly journals Grouping of Sequential Sounds—An Event-Related Potential Study Comparing Musicians and Nonmusicians

2004 ◽  
Vol 16 (2) ◽  
pp. 331-338 ◽  
Author(s):  
Titia L. van Zuijen ◽  
Elyse Sussman ◽  
István Winkler ◽  
Risto Näätänen ◽  
Mari Tervaniemi
Keyword(s):  
Mismatch Negativity ◽  
Music Perception ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Good Continuation ◽  
Professional Musicians ◽  
Auditory Grouping ◽  
Grouping And Segmentation ◽  
Related Potentials ◽  
Auditory Processes

It is believed that auditory processes governing grouping and segmentation of sounds are automatic and represent universal aspects of music perception (e.g., they are independent of the listener's musical skill). The present study challenges this view by showing that musicians and nonmusicians differ in their ability to preattentively group consecutive sounds. We measured event-related potentials (ERPs) from professional musicians and nonmusicians who were presented with isochronous tone sequences that they ignored. Four consecutive tones in a sequence could be grouped according to either pitch similarity or good continuation of pitch. Occasionally, the tone-group length was violated by a deviant tone. The mismatch negativity (MMN) was elicited to the deviants in both subject groups when the sounds could be grouped based on pitch similarity. In contrast, MMN was only elicited in musicians when the sounds could be grouped according to good continuation of pitch. These results suggest that some forms of auditory grouping depend on musical skill and that not all aspects of auditory grouping are universal.

scholarly journals Diagnosis of Heterotopic Pregnancy Using Ultrasound and Magnetic Resonance Imaging in the First Trimester of Pregnancy: A Case Report

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Sue Yazaki Sun ◽  
Edward Araujo Júnior ◽  
Julio Elito Júnior ◽  
Liliam Cristine Rolo ◽  
Felipe Favorette Campanharo ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Power Doppler ◽  
Uterine Cavity ◽  
Lower Abdominal Pain ◽  
First Trimester ◽  
Heterotopic Pregnancy ◽  
Resonance Imaging ◽  
Good Continuation ◽  
Intrauterine Pregnancy

Heterotopic pregnancy is a condition characterized by implantation of one or more viable embryos into the uterine cavity while another one is implanted ectopically, particularly into the uterine tube. Its occurrence has increased drastically over the last few years due to assisted reproduction procedures. In general, the diagnosis is made during the first trimester by using endovaginal two-dimensional ultrasound (2DUS), through observing a complex para- or retrouterine mass in association with a viable uterine pregnancy. However, under some conditions such as atypical ultrasonographic presentations, 2DUS does not clarify the situation whereas magnetic resonance imaging (MRI) of the pelvis is able to do so. We present the case of a pregnant woman in her fifth pregnancy, with a clinical condition of lower abdominal pain and pallor. Endovaginal 2DUS showed a complex voluminous mass in the left pelvic region in association with a viable intrauterine pregnancy. 2DUS in power Doppler mode showed “ring” vascularization, compatible with an ectopic gestational sac. MRI was of great importance in that it suggested that the mass had hematic content, which together with the clinical features, indicated that laparotomy should be performed. This surgical choice was essential for the woman to achieve a clinical improvement and for good continuation of the intrauterine pregnancy.

scholarly journals Criminisi Inpainting

2011 ◽  
Author(s):  
David Doria
Keyword(s):  
Linear Structures ◽  
Good Continuation ◽  
Object Removal ◽  
Hole Boundary ◽  
Preserve Linear

This document presents a system to fill a hole in an image by copying patches from elsewhere in the image. These patches should be a good continuation of the hole boundary into the hole. The patch copying is done in an order which attempts to preserve linear structures in the image. This implementation is based on the algorithm described in ``Object Removal by Exemplar-Based Inpainting’’ (Criminisi et. al.).The code is available here: https://github.com/daviddoria/Inpainting

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