![]() Compared with the plugin PIV analyser, this plugin provides more flexibility in terms of multiple PIV iteration, different correlation algorithm, as well as data retrieval and processing.įor FIJI users: use the built-in update manager (ImageJ's Menu>Help>Update.), and add the following URL via "Manage update sites">"Add update site" Nevertheless, the implementation as ImageJ plugin makes it more available to general public and easier to combine with other image processing tasks. It might be somehow rudimentary compared with other specialized PIV program (such as JPIV, mpiv, openPIV. ![]() This plugin was originally developed for measuring the displacement field of Traction Force Microscopy (TFM). This plugin also provide a plot function to visualize the vectorial data with selected color coding. The result of the PIV analysis will be displayed as a vectorial plot, and saved in plain text tabular format containing all the analysis result. One can either use the conventional cross-correlation method, which compares two interrogation windows with the same size or one can use the template matching method with normalized correlation coefficient algorithm, where the interrogation window is compared against a larger searching window. Two image correlation methods were implemented for the optic flow measurement. By progressively decreasing the interrogation window size, a better PIV resolution can be achieved. The cross-correlation between these image subregions measures the optic flow (displacement or velocity of the objects) within the image pair. Basically, a pair of images is divided into smaller regions (interrogation windows). ![]() This ImageJ plugin performs iterative particle image velocimetry (PIV) analysis.
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