Evaluation of Invariant Models for Dolphin Photo-Identification. - Babak Nadjar Araabi; Nasser Kehtarnavaz; Gilbert R. Hillman; Bernd Würsig (CBMS, 2001)

Locating an Affine/Projective Invariant Identifier Patch on an Image. - Babak Nadjar Araabi; Nasser Kehtarnavaz; Mark B. Yeary; Gilbert R. Hillman; Bernd Würsig (SSIAI, 2002)

Photo-Identification of Humpback and Gray Whales using Affine Moment Invariants. - Nasser Kehtarnavaz; Venkat Peddigari; C. Chandan; W. Syed; Gilbert R. Hillman; Bernd Würsig (SCIA, 2003)

An affine point-set and line invariant algorithm for photo-identification of gray whales. - C. Chandan; Nasser Kehtarnavaz; Gilbert R. Hillman; Bernd Würsig (Image Processing: Algorithms and Systems, 2004)

An affine invariant curve matching method for photo-identification of marine mammals. - Chandan Gope; Nasser Kehtarnavaz; Gilbert R. Hillman; Bernd Würsig (Pattern Recognit., 2005)