The integrated spot array target board consists of gray spots and black interval belts, and makes it convenient to mark the spots in sequence and correspond the distorted points to the ideal points.

Pink colour represents ABGD-based method. Green colour represents GMYC-based method. Blue colour represents morphology-based method. Black error bar indicates confidence interval.

Red, yellow and black colors are matched nicely with interval use and bright colors , but without color transition or mixed colors.