Applicability of Image Pattern Correlation Velocimetry

Correlation image velocimetry: a spectral approach.

A method, believed to be new, is introduced to evaluate displacement fields from the analysis of a deformed image compared with a reference image. In contrast to standard methods, which determine a piecewise constant displacement field, the present method gives direct access to spectral decomposition of the displacement field. A minimization procedure is derived and used twice: first, to determ...

Feature Correlation for Particle Image Velocimetry: An Application of Pattern Recognition

Particle Image Velocimetry (NV) has been used successfully for measuring instantaneous two dimensional velocity fields. Analyzing PIV images involves matching particle images capwred sequentially. In the usual practice, correlation (autoor cross-correlation) is used to find the displacement (hence velocity) of the particles within a large number of small "interrogation areas" in the field of vi...

Estimation of myocardial deformation using correlation image velocimetry

BACKGROUND Tagged Magnetic Resonance (tMR) imaging is a powerful technique for determining cardiovascular abnormalities. One of the reasons for tMR not being used in routine clinical practice is the lack of easy-to-use tools for image analysis and strain mapping. In this paper, we introduce a novel interdisciplinary method based on correlation image velocimetry (CIV) to estimate cardiac deforma...

Particle Image Velocimetry Correlation Signal-to-noise Metrics, Particle Image Pattern Mutual Information and Measurement uncertainty Quantification

Confocal laser scanning microscopy image correlation for nanoparticle flow velocimetry

We present a new particle image correlation technique for resolving nanoparticle flow velocity using confocal laser scanning microscopy (CLSM). The two primary issues that complicate nanoparticle scanning laser image correlation (SLIC)–based velocimetry are (1) the use of diffusion-dominated nanoparticles as flow tracers, which introduce a random decorrelating error into the velocity estimate, ...