By Liqiu Meng, Alexander Zipf, Stephan Winter
This e-book stories the most recent examine and technical achievements at the following subject matter blocks: layout of cellular map providers and its constraints, typology and value of cellular map prone, visualization suggestions on small monitors for time-critical initiatives, cellular map clients, interplay and model in cellular environments and functions of map-based cellular services.
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Additional resources for Map-based Mobile Services Design Interaction and Usability
Two prominent theories aim to describe how objects are recognized visually: Image-based object recognition and structure-based object recognition. The first proposes that humans recognize an object by matching the visual image with a snapshot stored in our memory. The second follows the idea that objects are analysed in terms of primitive 3D forms (geon theory) und structural interrelationships (Ware, 2004). While significant progress has been made in the understanding of individual processing steps within the human visual system, it is currently not possible to derive accurate predictions regarding the effectiveness of visualization techniques from these, as many processes remain active areas of research and complex interdependencies are involved in the whole process that are still little understood.
Lee et al. (2001) developed a prototype for visual navigation using a multimedia map. It used photographic images to represent landmarks and matched them directly on a perspective view of the map. Furthermore, full panoramic views from road nodes or sequential photographs along a path were used to provide visual information. The evaluation of the prototype has shown that landmark photographs must be taken from the line of sight in which the object is approached. Therefore, several images are required for each landmark.
The integration of landmarks could therefore make navigation instructions more usable. In this chapter we present a design concept for the visualization of building landmarks in mobile maps. We consider four categories of building landmarks: well-known shops (trade chains), shops referenced by their type, buildings with a specific name or function and buildings described by characteristic visual aspects. We then examine how landmarks from each of these categories can be effectively visualized by comparing possible visualizations at different abstraction levels, ranging from photo realistic image presentations, over drawings, sketches and icons to abstract symbols and words.