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A gradient-based edge detection scheme for pervasive computing is proposed, which is deduced from Fresnel diffraction. It is a pair of 3 times 3 convolution kernels for measuring horizontal and vertical gradients. While the new method can gives quantitative results equal to the Canny detector while it is simple. So it is more suitable for different kinds of computing platforms.
This paper proposed an edge detection scheme which is deduced from Fresnel diffraction. Analysis in this paper shows that Fresnel convolution kernel function performs well on edge enhancement when images are transformed into complex functions. Due to its mathematical complexity, the method is simplified into a linear convolution filter. The new edge detector is designed based on the simplified linear...
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