Fig. 5From: Development and testing of a new application for measuring motion at the cervical spineExtraction range of coordinates through which the line passes. × 1, rightmost coordinate of the edge. y1, rightmost coordinate of the edge. × 2, leftmost coordinate of the edge. y2, leftmost coordinate of the edge. x_M, midpoint coordinate of the edge. y_M, midpoint coordinate of the edgeBack to article page