To test the accuracy of mpiv, the PIV standard images were used. The images were taken from VSJ-PIV (case 1 in PIV Standard Project) distributed by the Visualization Society of Japan (http://www.vsj.or.jp/).
For comparison, figure 3 shows the dependence of the r.m.s. error on different algorithms chosen in mpiv, and different window sizes used in the process. Basically, there is no significant difference between choosing `cor' or `mqd' in terms of accuracy. The correlation algorithm is, however, faster than the MQD method, while the MQD algorithm seems to be more robust than the correlation method.
