Abstract
Abstract. Psychological findings indicate that the scale of human perception has implications on optimal map design. According to the map-based orientation in the real environment, this viewing scale depends on the visual field and is graphically reproduced using zoom levels, which significantly influences the map display area on smartphones. However, it is still unclear how to determine these zoom levels in the pedestrian navigation application. The purpose of this article is to adapt the map display area to the location-related viewing field using a corresponding zoom level. This optimal map display area should make it easier for the pedestrians’ self-location and navigational decisions. The results of the experiments have shown that there was a close relationship between the viewing field and the zoom level on the smartphone. However, if the first decision point of changing direction was in the viewing field, the distance between the viewpoint (You-Are-Here point) and this decision point influenced the zoom level. Otherwise, this distance did not have any influence on the zoom level. In this case, the distance between the viewpoint and the local landmarks determined the zoom level.
Highlights
The first step of the map-based orientation task in a foreign environment begins with a matching process between perceived objects in the environment and the depiction of these objects on the map
How can the zoom levels in the mobile map be adapted in order to determine an optimal map display area size for the purpose of self-location?
The results indicated that the zoom level was correlated with the parameters of the viewing field polygon
Summary
The first step of the map-based orientation task in a foreign environment begins with a matching process between perceived objects in the environment and the depiction of these objects on the map. The egocentric maps ensure that the ego (You-Are-Here point) is displayed in the geometric or optical center of the screen and the associated semantic contents are placed around this ego This egocentric map is able to align the map depiction to the viewing direction. The map display area on a smartphone screen is not always correspondent to the viewing field at a given viewpoint The reason for this lies therein that a default scale depending on the provider of the map app determines the map display area. How can the zoom levels in the mobile map be adapted in order to determine an optimal map display area size for the purpose of self-location?.
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