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Figure 1: Edge detection results on the DC Mall dataset. Dataset represented using PCA (a); edge detection results from Zenzo’s method (b), Huntsberger et al.’s method (c), and the proposed method (d).

Figure 1 Edge detection results on the DC Mall dataset. Dataset represented using PCA (a); edge detection results from Zenzo’s method (b), Huntsberger et al.’s method (c), and the proposed method (d).