000001827 001__ 1827
000001827 005__ 20141118153453.0
000001827 04107 $$acze
000001827 046__ $$k2010-05-10
000001827 100__ $$aTesař, V.
000001827 24500 $$aProcessing flow visualisation records by correlation coefficient evaluation in sub-images

000001827 24630 $$n16$$pEngineering Mechanics 2010
000001827 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Prague
000001827 506__ $$arestricted
000001827 520__ $$2eng$$aAuthors introduced a new method of processing flow visualisation images, aiming at identification of instability structures. In principle, the method utilises the structures' coherence. In two digital images, recorded at slightly different instants of time, the pixel pairs from the same position in the images are interrogated one by one. In each, vectors of the recorded quantity values are formed from n x n pixels in immediate neighbourhood. The correlation coefficient is then computed for the vector pair. High positive values of the coefficient indicate absence of change whereas values near zero indicate chaotic changes. Of interest are negative values, which indicate a coherent motion.

000001827 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000001827 653__ $$a

000001827 7112_ $$aEngineering Mechanics 2010$$cSvratka (CZ)$$d2010-05-10 / 2010-05-13$$gEM2010
000001827 720__ $$aTesař, V.$$iNěnička, V.
000001827 8560_ $$ffischerc@itam.cas.cz
000001827 8564_ $$s862054$$uhttps://invenio.itam.cas.cz/record/1827/files/Tesarv-056-PT.pdf$$y
             Original version of the author's contribution as presented on CD, FLU.
            
000001827 962__ $$r1750
000001827 980__ $$aPAPER