title: Speckle correlation method used to measure object's in-plane velocity.
abstract: We present a measurement of an object's in-plane velocity in one direction by the use of the speckle correlation method. Numerical correlations of speckle patterns recorded periodically during motion of the object under investigation give information used to evaluate the object's in-plane velocity. The proposed optical setup uses a detection plane in the image field and enables one to detect the object's velocity within the interval (10-150) microm x s(-1). Simulation analysis shows a way of controlling the measuring range. The presented theory, simulation analysis, and setup are verified through an experiment of measurement of the velocity profile of an object.
authors.affiliation: Joint Laboratory of Optics of Palacky University and Institute of Physics of the Academy of Sciences of the Czech Republic, Olomouc, Czech Republic. smid@optnw.upol.cz
authors.forename: Petr
authors.initials: P
authors.lastname: Smíd
authors.forename: Pavel
authors.initials: P
authors.lastname: Horváth
authors.forename: Miroslav
authors.initials: M
authors.lastname: Hrabovský
mesh_terms: D004867:Equipment Design; D007091:Image Processing, Computer-Assisted; D007834:Lasers; D008670:Metals; D008853:Microscopy / Q000295:instrumentation* / Q000379:methods; D015233:Models, Statistical; D008962:Models, Theoretical; D009038:Motion; D055095:Optics and Photonics; D010825:Physics / Q000379:methods; D013997:Time Factors
chemical_list: D008670:Metals