Isovist Analysis Captures Properties of Space Relevant for Locomotion and Experience

Wiener, Jan; Franz, Gérald; Rossmanith, Nicole; Reichelt, Andreas; Mallot, Hanspeter A.; Bülthoff, HH

doi:10.1068/p5587

Cited by 55 publications

(51 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The depth profiles were used to compare spatial properties of the left and right path alternative (left and right half of the stimulus). Earlier research suggests that line of sight (Conroy Dalton, 2003) and the local spatial complexity (Wiener et al, 2007) influence navigation and wayfinding behavior. Accordingly, we calculated longest line of sight for both path alternatives as well as the number of straight line segments to approximate their the spatial complexity.…”

Section: Stimulimentioning

confidence: 99%

“…Areas in the stimuli in which the profile is high relate to areas in space that are distant and vice versa. This analysis was chosen, because (1) the spatial situation is described from the perspective of the beholder capturing behaviorally relevant properties of space (Wiener et al, 2007;Franz & Wiener, 2008); (2) the visual system is able to use functionally equivalent information (i.e. angular declination) for distance judgments (Ooi, Wu, & He, 2001); (3) recent approaches in computational vision demonstrate that this information can also be computed directly from the image, even for complex natural outdoor scenes (Hoiem, Efros, & Hebert, 2007).…”

Section: Stimulimentioning

confidence: 99%

See 1 more Smart Citation

Gaze behaviour during space perception and spatial decision making

Wiener

Hölscher

Büchner

et al. 2011

Psychological Research

View full text Add to dashboard Cite

A series of four experiments investigating gaze behavior and decision making in the context of wayfinding is reported. Participants were presented with screen-shots of choice points taken in large virtual environments. Each screen-shot depicted alternative path options. In Experiment 1, participants had to decide between them in order to find an object hidden in the environment. In Experiment 2, participants were first informed about which path option to take as if following a guided route. Subsequently they were presented with the same images in random order and had to indicate which path option they chose during initial exposure. In Experiment 1, we demonstrate (1) that participants have a tendency to choose the path option that featured the longer line of sight, and (2) a robust gaze bias towards the eventually chosen path option. In Experiment 2, systematic differences in gaze behavior towards the alternative path options between encoding and decoding were observed. Based on data from Experiments 1 & 2 and two control experiments ensuring that fixation patterns were specific to the spatial tasks, we develop a tentative model of gaze behavior during wayfinding decision making suggesting that particular attention was paid to image areas depicting changes in the local geometry of the environments such as corners, openings, and occlusions. Together, the results suggest that gaze during a wayfinding tasks is directed toward, and can be predicted by, a subset of environmental features and that gaze bias effects are a general phenomenon of visual decision making.

show abstract

Section: Stimulimentioning

confidence: 99%

Section: Stimulimentioning

confidence: 99%

Gaze behaviour during space perception and spatial decision making

Wiener

Hölscher

Büchner

et al. 2011

Psychological Research

View full text Add to dashboard Cite

show abstract

“…Invariably, this invokes geometry approaches that rely on central lines of tendency in the arrangement of urban morphology [130,389]. This work is in some senses adapted from the viewshed analysis of terrain, where afforded views can be interpreted by "isovists" (lines of equal vista) [125,390].…”

Section: Visionmentioning

confidence: 99%

Computational Streetscapes

Torrens

2016

Computation

View full text Add to dashboard Cite

Abstract:Streetscapes have presented a long-standing interest in many fields. Recently, there has been a resurgence of attention on streetscape issues, catalyzed in large part by computing. Because of computing, there is more understanding, vistas, data, and analysis of and on streetscape phenomena than ever before. This diversity of lenses trained on streetscapes permits us to address long-standing questions, such as how people use information while mobile, how interactions with people and things occur on streets, how we might safeguard crowds, how we can design services to assist pedestrians, and how we could better support special populations as they traverse cities. Amid each of these avenues of inquiry, computing is facilitating new ways of posing these questions, particularly by expanding the scope of what-if exploration that is possible. With assistance from computing, consideration of streetscapes now reaches across scales, from the neurological interactions that form among place cells in the brain up to informatics that afford real-time views of activity over whole urban spaces. For some streetscape phenomena, computing allows us to build realistic but synthetic facsimiles in computation, which can function as artificial laboratories for testing ideas. In this paper, I review the domain science for studying streetscapes from vantages in physics, urban studies, animation and the visual arts, psychology, biology, and behavioral geography. I also review the computational developments shaping streetscape science, with particular emphasis on modeling and simulation as informed by data acquisition and generation, data models, path-planning heuristics, artificial intelligence for navigation and way-finding, timing, synthetic vision, steering routines, kinematics, and geometrical treatment of collision detection and avoidance. I also discuss the implications that the advances in computing streetscapes might have on emerging developments in cyber-physical systems and new developments in urban computing and mobile computing.

show abstract

“…Although virtual agents navigate the environment purely guided by its visual properties and lack any intentionality, they could robustly reflect how people move in real-world scenarios. "The agent can infer the affordances of the environment, or at least information on the global spatial relations visible from their current position in the environment" (Penn and Turner 2001:105), Two German psychologists (Wiener and Franz 2005;Wiener, Franz et al 2007) have recently undertaken a set of virtual experiments using isovist analysis as a means to disclose subjective valuation of space. In the first of these experiments, Wiener and Franz (2005) constructed sixteen virtual rooms resembling art galleries.…”

Section: Figure 1: Example Of An Isovist At An Intersectionmentioning

confidence: 99%

“…In another experiment Wiener and Franz (2007) asked subjects to navigate in virtual rooms of different shapes (and hence, of different isovist characteristics) and then to describe these rooms according to a protocol. They found that qualitative valuation of scenes was highly related to certain isovist properties, specifically to what the authors called an isovist "complexity," which was based on an isovist's area and perimeter.…”

Section: Figure 1: Example Of An Isovist At An Intersectionmentioning

confidence: 99%

Development of 3D VGA tools: an application in a case of weak heritage in Valparaiso, Chile

Culagovski¹,

Greene²,

Mora³

2014

ing.inv.

View full text Add to dashboard Cite

El desarrollo de las herramientas VGA 3D: aplicación en el caso de patrimonio débil en Valparaíso, Chile R. Culagovski 1 , M. Greene 2 and R. Mora 3 ABSTRACTIn the last ten years, isovist analysis has emerged as a fundamental method for reflecting a person's visual experience in cities and buildings. However, until now, most studies have used a two-dimensional planar perspective, neglecting the three-dimensional nature of vision. This paper presents a method to construct 3D isovists that give a more realistic account of a person's visual experience in hilly urban scenarios where a person can see places that are not directly accessible. The paper aims to contribute to the construction of objective methods to represent the environment in a more ecological way.The method was tested in the city of Valparaiso, a heritage city that spreads across thirty hills forming a natural amphitheater and whose charm comes largely from the visual experience that arises from observing distant parts of the city that are not directly accessible. The results show that three-dimensional isovists are capable of capturing the underlying visual properties of ravines and urban viewpoints in Valparaiso.Keywords: 3D Isovist analysis, visual experience, Valparaiso. RESUMENEn los últimos diez años el análisis de campos visuales, también conocido como análisis de isovistas, ha surgido como una herramienta fundamental para representar la experiencia visual de una persona, al moverse en las ciudades y los edificios. Sin embargo, hasta ahora la mayoría de las aproximaciones ocupan un enfoque en el que los campos visuales son mostrados de forma bi-dimensional, soslayando la naturaleza tri-dimensional de la visión. Este escrito, presenta un método para construir isovistas en tres dimensiones; la idea es dar una visión más realista de la experiencia visual de una persona, en entornos urbanos con abruptos cambios de nivel (como las ciudades construidas en colinas, por ejemplo), donde es posible ver lugares difíciles de alcanzar directamente.El método fue probado en la ciudad de Valparaiso: sitio urbano patromonial, caracterizado por disponerse sobre treinta cerros que forman un anfiteatro natural y cuyo encanto reside, en buena medida, por la experiencia visual que emana al mirar la ciudad desde los cerros. Los resultados muestran que las isovistas en tres dimensiones, son capaces de capturar las propiedades visuales subyacentes de las quebradas y los miradores.Palabras clave: isovistas 3D, experiencia visual y Valparaiso.

show abstract

Isovist Analysis Captures Properties of Space Relevant for Locomotion and Experience

Cited by 55 publications

References 30 publications

Gaze behaviour during space perception and spatial decision making

Gaze behaviour during space perception and spatial decision making

Computational Streetscapes

Development of 3D VGA tools: an application in a case of weak heritage in Valparaiso, Chile

Contact Info

Product

Resources

About