Arzu Çöltekin
Biographic Data
| ID | 6571368 |
|---|---|
| NAME | Arzu Çöltekin |
| GIVEN NAMES | Arzu |
| FAMILY NAME | Çöltekin |
| SIGNATURE | ÇÖLTEKIN A |
| AFFILIATIONS | University of Zurich |
| ORCID | 0000-0002-3178-3509 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 18 |
| AUTHOR COUNT | 11 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2009 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 3 |
Turning implicit into explicit: Does it matter if the rainbow color schemes are continuous or discrete? A case study with 2D and 3D permafrost visualizations
We report on a user study ( n = 184) evaluating how discretization might affect reading values from permafrost visualizations with the rainbow color scheme (RC), and how it might interact with selected visualization and task types. After collecting data from 20 experts on their preferences, we compare continuous vs. discrete (banded) versions of the popular yet controversial rainbow colors. As visualizations, we include 2D vs. 3D versions, and a …
Visual Attention and Recognition Differences Based on Expertise in a Map Reading and Memorability Study
This study investigates how expert and novice map users’ attention is influenced by the map design characteristics of 2D web maps by building and sharing a framework to analyze large volumes of eye tracking data. Our goal is to respond to the following research questions: (i) which map landmarks are easily remembered? (memorability), (ii) how are task difficulty and recognition performance associated? (task difficulty), and (iii) how do experts a…
Perspective switch and spatial knowledge acquisition: Effects of age, mental rotation ability and visuospatial memory capacity on route learning in virtual environments with different levels of realis…
We report on a study in which we examine if the visual design of virtual environments (VEs) affects visuospatial knowledge acquisition in younger and older adults with varying cognitive abilities in the context of navigational learning, specifically when a perspective switch is involved. Perspective switch between first-person and aerial-views is an important and commonly executed task in navigation; and it is a special case in studying the effec…
The effects of visual realism, spatial abilities, and competition on performance in map-based route learning in men
We report on how visual realism might influence map-based route learning performance in a controlled laboratory experiment with 104 male participants in a competitive context. Using animations of a dot moving through routes of interest, we find that participants recall the routes more accurately with abstract road maps than with more realistic satellite maps. We also find that, irrespective of visual realism, participants with higher spatial abil…
Measured and perceived visual complexity: A comparative study among three online map providers
We present a study on human perception of map complexity, with the objective of better understanding design decisions that may lead to undesirable levels of complexity in web maps. We compare three complexity metrics to human ratings of complexity obtained through a user survey. Specifically, we use two algorithmic approaches published by others, which measure feature congestion (FC) and subband entropy (SE), as well as our own approach of counti…
An empirical evaluation of three elevation change symbolization methods along routes in bicycle maps
Elevation change is critical for choosing a route when bicycling. We detail an empirical study in which we comparatively evaluated three linear symbolization types (color hue, color-coded arrows, and elevation profiles) to depict elevation change in bicycle maps for two common bicycle route planning tasks: relative height detection and slope identification. Participants performed most accurately with the color-coded arrows for relative height det…
An empirical assessment of the impact of the light direction on the relief inversion effect in shaded relief maps: NNW is better than NW
Relief inversion (or terrain reversal) effect is a well-known phenomenon in cartography that occurs when shadow is the main depth cue for three-dimensional shape perception. Light direction has been suggested as the main cause of this effect. However, the prevalence of relief inversion effect with regard to the changing light direction is currently not established, and there is little empirical evidence on this subject. This article systematicall…
The effect of spatial distance on the discriminability of colors in maps
The spatial distance (gap) between map symbols can have a great impact on their discriminability, however, there is little empirical evidence to establish spatial and attribute thresholds. In this paper, we examine the effect of the spatial gap in discriminability of color hue and value, that is, we conducted an online study to obtain performance metrics; then an eye-tracking study to understand participants’ strategies and cognitive processes. P…
Applications of 3D City Models: State of the Art Review
In the last decades, 3D city models appear to have been predominantly used for visualisation; however, today they are being increasingly employed in a number of domains and for a large range of tasks beyond visualisation. In this paper, we seek to understand and document the state of the art regarding the utilisation of 3D city models across multiple domains based on a comprehensive literature study including hundreds of research papers, technica…
Multi-methodological reconstruction of the lake level at Morgarten in the context of the history of the Swiss Confederation
In AD 1315, the Habsburgs fought against the Swiss Confederation at Morgarten. Since historical records are very limited, the battle has been the subject of very controversial discussions. Its location and outcome seem likely to have been influenced by the landscape and the size of the Aegeri lake, but only sparse and contradictory information are available. Numerical, semi-quantitative and relative dating techniques were applied to reconstruct t…
Evaluating the Effectiveness of Interactive Map Interface Designs: A Case Study Integrating Usability Metrics with Eye-Movement Analysis
This paper proposes combining traditional usability methods with the analysis of eye movement recordings to evaluate interactive map interfaces, and presents a case study in support of this approach. The case study evaluates two informationally equivalent, but differently designed online interactive map interfaces presented to novice users. In a mixed factorial experiment, thirty participants were asked to solve three typical map-use tasks using …
An empirical assessment of the impact of the light direction on the relief inversion effect in shaded relief maps: NNW is better than NW
Relief inversion (or terrain reversal) effect is a well-known phenomenon in cartography that occurs when shadow is the main depth cue for three-dimensional shape perception. Light direction has been suggested as the main cause of this effect. However, the prevalence of relief inversion effect with regard to the changing light direction is currently not established, and there is little empirical evidence on this subject. This article systematicall…
The effect of spatial distance on the discriminability of colors in maps
The spatial distance (gap) between map symbols can have a great impact on their discriminability, however, there is little empirical evidence to establish spatial and attribute thresholds. In this paper, we examine the effect of the spatial gap in discriminability of color hue and value, that is, we conducted an online study to obtain performance metrics; then an eye-tracking study to understand participants’ strategies and cognitive processes. P…
Evaluating the Effectiveness of Interactive Map Interface Designs: A Case Study Integrating Usability Metrics with Eye-Movement Analysis
This paper proposes combining traditional usability methods with the analysis of eye movement recordings to evaluate interactive map interfaces, and presents a case study in support of this approach. The case study evaluates two informationally equivalent, but differently designed online interactive map interfaces presented to novice users. In a mixed factorial experiment, thirty participants were asked to solve three typical map-use tasks using …
An empirical evaluation of three elevation change symbolization methods along routes in bicycle maps
Elevation change is critical for choosing a route when bicycling. We detail an empirical study in which we comparatively evaluated three linear symbolization types (color hue, color-coded arrows, and elevation profiles) to depict elevation change in bicycle maps for two common bicycle route planning tasks: relative height detection and slope identification. Participants performed most accurately with the color-coded arrows for relative height det…
Turning implicit into explicit: Does it matter if the rainbow color schemes are continuous or discrete? A case study with 2D and 3D permafrost visualizations
We report on a user study ( n = 184) evaluating how discretization might affect reading values from permafrost visualizations with the rainbow color scheme (RC), and how it might interact with selected visualization and task types. After collecting data from 20 experts on their preferences, we compare continuous vs. discrete (banded) versions of the popular yet controversial rainbow colors. As visualizations, we include 2D vs. 3D versions, and a …
Perspective switch and spatial knowledge acquisition: Effects of age, mental rotation ability and visuospatial memory capacity on route learning in virtual environments with different levels of realis…
We report on a study in which we examine if the visual design of virtual environments (VEs) affects visuospatial knowledge acquisition in younger and older adults with varying cognitive abilities in the context of navigational learning, specifically when a perspective switch is involved. Perspective switch between first-person and aerial-views is an important and commonly executed task in navigation; and it is a special case in studying the effec…
The effects of visual realism, spatial abilities, and competition on performance in map-based route learning in men
We report on how visual realism might influence map-based route learning performance in a controlled laboratory experiment with 104 male participants in a competitive context. Using animations of a dot moving through routes of interest, we find that participants recall the routes more accurately with abstract road maps than with more realistic satellite maps. We also find that, irrespective of visual realism, participants with higher spatial abil…
Measured and perceived visual complexity: A comparative study among three online map providers
We present a study on human perception of map complexity, with the objective of better understanding design decisions that may lead to undesirable levels of complexity in web maps. We compare three complexity metrics to human ratings of complexity obtained through a user survey. Specifically, we use two algorithmic approaches published by others, which measure feature congestion (FC) and subband entropy (SE), as well as our own approach of counti…
Evaluating the Effectiveness of Interactive Map Interface Designs: A Case Study Integrating Usability Metrics with Eye-Movement Analysis
This paper proposes combining traditional usability methods with the analysis of eye movement recordings to evaluate interactive map interfaces, and presents a case study in support of this approach. The case study evaluates two informationally equivalent, but differently designed online interactive map interfaces presented to novice users. In a mixed factorial experiment, thirty participants were asked to solve three typical map-use tasks using …
Applications of 3D City Models: State of the Art Review
In the last decades, 3D city models appear to have been predominantly used for visualisation; however, today they are being increasingly employed in a number of domains and for a large range of tasks beyond visualisation. In this paper, we seek to understand and document the state of the art regarding the utilisation of 3D city models across multiple domains based on a comprehensive literature study including hundreds of research papers, technica…
Multi-methodological reconstruction of the lake level at Morgarten in the context of the history of the Swiss Confederation
In AD 1315, the Habsburgs fought against the Swiss Confederation at Morgarten. Since historical records are very limited, the battle has been the subject of very controversial discussions. Its location and outcome seem likely to have been influenced by the landscape and the size of the Aegeri lake, but only sparse and contradictory information are available. Numerical, semi-quantitative and relative dating techniques were applied to reconstruct t…
An empirical evaluation of three elevation change symbolization methods along routes in bicycle maps
Elevation change is critical for choosing a route when bicycling. We detail an empirical study in which we comparatively evaluated three linear symbolization types (color hue, color-coded arrows, and elevation profiles) to depict elevation change in bicycle maps for two common bicycle route planning tasks: relative height detection and slope identification. Participants performed most accurately with the color-coded arrows for relative height det…
An empirical assessment of the impact of the light direction on the relief inversion effect in shaded relief maps: NNW is better than NW
Relief inversion (or terrain reversal) effect is a well-known phenomenon in cartography that occurs when shadow is the main depth cue for three-dimensional shape perception. Light direction has been suggested as the main cause of this effect. However, the prevalence of relief inversion effect with regard to the changing light direction is currently not established, and there is little empirical evidence on this subject. This article systematicall…
The effect of spatial distance on the discriminability of colors in maps
The spatial distance (gap) between map symbols can have a great impact on their discriminability, however, there is little empirical evidence to establish spatial and attribute thresholds. In this paper, we examine the effect of the spatial gap in discriminability of color hue and value, that is, we conducted an online study to obtain performance metrics; then an eye-tracking study to understand participants’ strategies and cognitive processes. P…
The effects of visual realism, spatial abilities, and competition on performance in map-based route learning in men
We report on how visual realism might influence map-based route learning performance in a controlled laboratory experiment with 104 male participants in a competitive context. Using animations of a dot moving through routes of interest, we find that participants recall the routes more accurately with abstract road maps than with more realistic satellite maps. We also find that, irrespective of visual realism, participants with higher spatial abil…
Measured and perceived visual complexity: A comparative study among three online map providers
We present a study on human perception of map complexity, with the objective of better understanding design decisions that may lead to undesirable levels of complexity in web maps. We compare three complexity metrics to human ratings of complexity obtained through a user survey. Specifically, we use two algorithmic approaches published by others, which measure feature congestion (FC) and subband entropy (SE), as well as our own approach of counti…
Perspective switch and spatial knowledge acquisition: Effects of age, mental rotation ability and visuospatial memory capacity on route learning in virtual environments with different levels of realis…
We report on a study in which we examine if the visual design of virtual environments (VEs) affects visuospatial knowledge acquisition in younger and older adults with varying cognitive abilities in the context of navigational learning, specifically when a perspective switch is involved. Perspective switch between first-person and aerial-views is an important and commonly executed task in navigation; and it is a special case in studying the effec…
Visual Attention and Recognition Differences Based on Expertise in a Map Reading and Memorability Study
This study investigates how expert and novice map users’ attention is influenced by the map design characteristics of 2D web maps by building and sharing a framework to analyze large volumes of eye tracking data. Our goal is to respond to the following research questions: (i) which map landmarks are easily remembered? (memorability), (ii) how are task difficulty and recognition performance associated? (task difficulty), and (iii) how do experts a…
Turning implicit into explicit: Does it matter if the rainbow color schemes are continuous or discrete? A case study with 2D and 3D permafrost visualizations
We report on a user study ( n = 184) evaluating how discretization might affect reading values from permafrost visualizations with the rainbow color scheme (RC), and how it might interact with selected visualization and task types. After collecting data from 20 experts on their preferences, we compare continuous vs. discrete (banded) versions of the popular yet controversial rainbow colors. As visualizations, we include 2D vs. 3D versions, and a …
Computer Science (9 works) · Spatial Cognition and Navigation (8 works) · Artificial Intelligence (7 works) · Geography (7 works) · Categorization, perception, and language (5 works) · Engineering (4 works) · Geographic Information Systems Studies (4 works) · Psychology (4 works) · Cartography (3 works) · Context (archaeology (3 works)