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1 results

  • Basing Non-Linear Displays on Vector Map Formats

  • Daniel N. Mountjoy, Celestine A. Ntuen, Sharolyn A. Converse, William P. Marshak
  • Journal:
    The Journal of Navigation / Volume 53 / Issue 1 / January 2000
    Published online by Cambridge University Press:
    01 January 2000, pp. 68-78
    Print publication:
    January 2000

  • One approach to increasing the area coverage of small-screen map displays is to exploit the ‘elasticity’ of the electronic display through use of non-linear scaling. Although resolution is necessarily lost in areas of smaller scale, bitmap images lose important information when re- scaled. This can render features unrecognisable and text unreadable. Vector maps are more tolerant to non-linear scaling because critical position information found in vertices of lines is distorted without being lost. Examples of non-linear scaling are presented to demonstrate the effect on bitmap and vector images. Ongoing research examining the user performance benefits of non-linear displays is also described.