Fig. 12From: Optimum design of chamfer masks using symmetric mean absolute percentage errorError maps of portion of SOP3 generated by a 7Ă—7 chamfer mask. Mean absolute error (MAE) and mean squared error (MSE) are computed from the selected portion of the map. The reference error map has all entries zeros (100% black). a Butt et al. (total error = 0.0383). b Proposed (total error = 0.0173)Back to article page