Variation of edge detection uncertainty on fish-eye images

This paper reports that uncertainty of detected edges on a fish-eye image depends on the direction to observe the edges. In fish-eye cameras, dimensions of observation space corresponding to a pixel greatly change with the pixel location. This dimension is defined as “spatial uncertainty” in this paper and formulated with typical projection models of fish-eye cameras. Experimental results showed that the uncertainty of edge detection on fish-eye images increased with increase of the spatial uncertainty.