scholarly journals Erratum: Hu, P.B., et al. toward Reconstructing 3D Buildings from ALS Data Based on Gestalt Laws. Remote Sens. 2018, 10, 1127

2018 ◽  
Vol 10 (11) ◽  
pp. 1708
Author(s):  
Pingbo Hu ◽  
Bisheng Yang ◽  
Zhen Dong ◽  
Pengfei Yuan ◽  
Ronggang Huang ◽  
...  
Keyword(s):  
Gestalt Laws

The authors wish to make a correction to their paper [...]

scholarly journals Multistability, cross-modal binding and the additivity of conjoined grouping principles

2012 ◽  
Vol 367 (1591) ◽  
pp. 954-964 ◽  
Author(s):  
Michael Kubovy ◽  
Minhong Yu
Keyword(s):  
Speech Perception ◽  
Perceptual Organization ◽  
Visual Binding ◽  
Gestalt Laws ◽  
Sceptical View

We present a sceptical view of multimodal multistability—drawing most of our examples from the relation between audition and vision. We begin by summarizing some of the principal ways in which audio-visual binding takes place. We review the evidence that unambiguous stimulation in one modality may affect the perception of a multistable stimulus in another modality. Cross-modal influences of one multistable stimulus on the multistability of another are different: they have occurred only in speech perception. We then argue that the strongest relation between perceptual organization in vision and perceptual organization in audition is likely to be by way of analogous Gestalt laws. We conclude with some general observations about multimodality.

scholarly journals Towards Reconstructing 3D Buildings from ALS Data Based on Gestalt Laws

2018 ◽  
Vol 10 (7) ◽  
pp. 1127 ◽  
Author(s):  
Pingbo Hu ◽  
Bisheng Yang ◽  
Zhen Dong ◽  
Pengfei Yuan ◽  
Ronggang Huang ◽  
...  
Keyword(s):  
Structural Model ◽  
Point Clouds ◽  
Complex Nature ◽  
Building Structures ◽  
Data Infrastructure ◽  
Roof Structure ◽  
Building Models ◽  
Topological Tree ◽  
City System ◽  
Gestalt Laws

3D building models are an essential data infrastructure for various applications in a smart city system, since they facilitate spatial queries, spatial analysis, and interactive visualization. Due to the highly complex nature of building structures, automatically reconstructing 3D buildings from point clouds remains a challenging task. In this paper, a Roof Attribute Graph (RAG) method is proposed to describe the decomposition and topological relations within a complicated roof structure. Furthermore, top-down decomposition and bottom-up refinement processes are proposed to reconstruct roof parts according to the Gestalt laws, generating a complete structural model with a hierarchical topological tree. Two LiDAR datasets from Guangdong (China) and Vaihingen (Germany) with different point densities were used in our study. Experimental results, including the assessment on Vaihingen standardized by the International Society for Photogrammetry and Remote Sensing (ISPRS), show that the proposed method can be used to model 3D building roofs with high quality results as demonstrated by the completeness and correctness metrics presented in this paper.

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.

Grouping Based on Phenomenal Similarity of Achromatic Color

Perception ◽  
1992 ◽  
Vol 21 (6) ◽  
pp. 779-789 ◽  
Author(s):  
Irvin Rock ◽  
Romi Nijhawan ◽  
Stephen Palmer ◽  
Leslie Tudor
Keyword(s):  
Alternative Explanation ◽  
Achromatic Color ◽  
Lightness Constancy ◽  
Empirical Question ◽  
The World ◽  
Proximal Stimulus ◽  
Gestalt Laws

It is widely acknowledged that a precondition for the perception of the world of objects and events is an early process of organization, and it has generally been assumed that such organization is based on the Gestalt laws of grouping. However, the stage at which such grouping occurs, whether early or late, is an empirical question. It is demonstrated in two experiments that grouping by similarity of neutral color is based not on similarity of absolute luminance at the level of the proximal stimulus, but on phenomenal similarity of lightness resulting from the achievement of lightness constancy. An alternative explanation of such grouping based on the equivalence of luminance ratios between elements and background is ruled out by appropriate control conditions.

Identifying semantic blocks in Web pages using Gestalt laws of grouping

2015 ◽  
Vol 19 (5) ◽  
pp. 957-978 ◽  
Author(s):  
Zhen Xu ◽  
James Miller
Keyword(s):  
Web Pages ◽  
Gestalt Laws
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