The images in these folders (A and B) are copied from the PIV challenged website, cases A and B (https://www.pivchallenge.org/pub/index.html#a). The credit for case A images goes to Christian Kaehler (christian.kaehler@dlr.de), the credit for case B goes to  Dr. K. Okamoto (okamoto@tokai.t.u-tokyo.ac.jp).
