Computational and Mathematical Methods in Medicine

Research Article

Automated Detection of Healthy and Diseased Aortae from Images Obtained by Contrast-Enhanced CT Scan

Figure 5

Fast Circle-Detection algorithm conditions.
107871.fig.005a
(a) The gradient ( ) angle is 180 degrees from the gradient ( ) angle
107871.fig.005b
(b) The gradient vector ( ) is equal to the angle of
107871.fig.005c
(c) The line should pass through the centroid ( ) of the object