Effects of Visual Variables on the Perception of Distance in Off-Screen Landmarks: Size, Color Value, and Crispness

Li, Rui

doi:10.1007/978-3-319-47289-8_5

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…After testifying the roles of landmark identity, the authors explore ways to visualize the distance to distant landmarks. As a way of symbolizing distance, which is metric information, the authors then select visual variables of cartography (MacEachren et al, 2012) suitable for representing distance (metric) information (Li, 2017). Theoretically, effective visual variables for visualizing distant landmarks are size, fuzziness, and transparency.…”

Section: Landmarks On Mobile Maps: Roles Of Visual Variables In the A...mentioning

confidence: 99%

Landmarks on Mobile Maps: Roles of Visual Variables in the Acquisition of Spatial Knowledge

Kim¹,

Li²

2022

IJSW

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This study presents the evaluation of a new design of mobile maps to overcome the limit of the small screen by visualizing landmarks which are normally invisible as located beyond the displayed map extent. The visualization of distant landmarks adapts a specific cartographic visual variable: size, fuzziness, or transparency, respectively, to conceptualize distances in three ranges: nearby, intermediate, and far. To evaluate the effectiveness of each design on acquisition of spatial knowledge, this study carries out an online experiment and then a field experiment in the actual environment. In the online experiment, participants see the static default screen of the mobile maps with landmarks. In the field experiment, participants can interact with the mobile map App which allows them to tap, pan, or zoom the map. Results show that both online and field experiments yield similar findings, although the results from field experiment with allowed interaction are better. In general, the visualization of distant landmarks contributes to the spatial learning. Individual visual variables such as fuzziness and transparency, however, facilitate the acquisition of spatial knowledge better than size.

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Section: Landmarks On Mobile Maps: Roles Of Visual Variables In the A...mentioning

confidence: 99%

Landmarks on Mobile Maps: Roles of Visual Variables in the Acquisition of Spatial Knowledge

Kim¹,

Li²

2022

IJSW

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“…On the one hand, traditional geovisualization usually refers to 2D/3D cartographic visualization, which, to some degree, is isolated from the real world because it involves creating another “world” (such as a map or a virtual environment) to describe the real world, and this isolation may result in improper spatial cognition or may even produce incorrect information. For example, the limitation of small screens on mobile or embedded devices adds difficulty to user’s cognitive mapping [ 7 ]. On the other hand, interaction, as an important dimension of geovisualization [ 8 ], is vital to the user experience.…”

Section: Introductionmentioning

confidence: 99%

A Mobile Outdoor Augmented Reality Method Combining Deep Learning Object Detection and Spatial Relationships for Geovisualization

Rao

Qiao

Ren

et al. 2017

Sensors

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The purpose of this study was to develop a robust, fast and markerless mobile augmented reality method for registration, geovisualization and interaction in uncontrolled outdoor environments. We propose a lightweight deep-learning-based object detection approach for mobile or embedded devices; the vision-based detection results of this approach are combined with spatial relationships by means of the host device’s built-in Global Positioning System receiver, Inertial Measurement Unit and magnetometer. Virtual objects generated based on geospatial information are precisely registered in the real world, and an interaction method based on touch gestures is implemented. The entire method is independent of the network to ensure robustness to poor signal conditions. A prototype system was developed and tested on the Wuhan University campus to evaluate the method and validate its results. The findings demonstrate that our method achieves a high detection accuracy, stable geovisualization results and interaction.

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Spatial aspects of evacuation: a closer look at user interaction during route choice

Snopková

Heřman

2023

International Journal of Cartography

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Effects of Visual Variables on the Perception of Distance in Off-Screen Landmarks: Size, Color Value, and Crispness

Cited by 3 publications

References 24 publications

Landmarks on Mobile Maps: Roles of Visual Variables in the Acquisition of Spatial Knowledge

Landmarks on Mobile Maps: Roles of Visual Variables in the Acquisition of Spatial Knowledge

A Mobile Outdoor Augmented Reality Method Combining Deep Learning Object Detection and Spatial Relationships for Geovisualization

Spatial aspects of evacuation: a closer look at user interaction during route choice

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