Object localization based on directional information case of 2D vector data
GIS '06 Proceedings of the 14th annual ACM international symposium on Advances in geographic information systems
Directional relationships to a reference object: a quantitative approach based on force fields
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Learning-based object segmentation using regional spatial templates and visual features
ICCVG'12 Proceedings of the 2012 international conference on Computer Vision and Graphics
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A directional spatial relationship to a reference object (e.g., "east of the post office") can be represented by a spatial template. The template partitions the space into regions where the relationship holds (to various extents) and regions where it does not hold. The objects for which the relationship holds can then be located. A template can be easily modeled. Computationally, however, exact calculation of the model in case of 2D raster data is prohibitively expensive, and a tractable approximation algorithm was proposed. Here, we introduce a new concept: the concept of the F-template. It leads to a new approximation algorithm, which is faster, gives better results, and is more flexible.