Fig. 4
From: A novel approach for handedness detection from off-line handwriting using fuzzy conceptual reduction
Examples of some of feature extractions. a Original binary handwritten characters. b Direction feature f1 where the red color corresponds to a \(\mathcal {\pi }\)/2 tangent, and the blue color corresponds to a zero tangent. c Curvature feature f2 highlighted in the binary image; red corresponds to the maximum curvature, and blue corresponds to the minimum curvature. d Tortuosity feature f3 where red corresponds to the maximum line segment that traverses a point and blue to the minimum length