@article {649, title = {Moment Invariants for 2D Flow Fields via Normalization in Detail}, journal = {IEEE Transactions on Visualization and Computer Graphics (TVCG)}, volume = {21}, year = {2015}, pages = {916--929}, url = {http://www.informatik.uni-leipzig.de/~bujack/bujackTVCGSmall.pdf}, author = {Roxana Bujack and Ingrid Hotz and Gerik Scheuermann and Eckhard Hitzer} }