title: High-speed digital-image correlation method: comment.
abstract: We comment on the recent letter by Wang et al. [Opt. Lett. 34, 1955 (2009)], in which the authors presented a high-speed digital image correlation (DIC) method. We consider that the so-called high-speed DIC method has considerable deficiencies and that the Letter is misleading in terms of applicability and measurement accuracy as well as processing speed.
authors.affiliation: Department of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, USA. wangz@cua.edu
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Wang
authors.forename: Thang M
authors.initials: TM
authors.lastname: Hoang
authors.forename: Dung A
authors.initials: DA
authors.lastname: Nguyen
authors.forename: Andrew C
authors.initials: AC
authors.lastname: Urcinas
authors.forename: John R
authors.initials: JR
authors.lastname: Magro