Spatial data computations in a toolkit to improve accessibility for mobile applications

Abstract

The HaptiMap toolkit is an open-source library enabling location-based mobile application developers to include features advancing accessibility in their applications. This paper presents the structure of the geospatial data access of the HaptiMap toolkit. In addition, an evaluation is carried out on the processing performance of the toolkit. The operation performances are compared with the corresponding operations of a leading open-source library, which supports computational geometry calculations. The results indicate that implementing custom-optimized algorithms for the toolkit’s data model is a feasible approach when the algorithms are specific or simple enough, while complex algorithms should be accessed through wrapped functions.