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Journal of Flow Visualization and Image Processing

Publication de 4  numéros par an

ISSN Imprimer: 1065-3090

ISSN En ligne: 1940-4336

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.6 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00013 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

NOISE REDUCTION METHOD IN FLOW VISUALIZATION USING DSPI

Volume 6, Numéro 4, 1999, pp. 261-267
DOI: 10.1615/JFlowVisImageProc.v6.i4.10
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RÉSUMÉ

The recent development of digital speckle pattern interferometry (DSPI) makes it a powerful tool inflow visualization and diagnostics, but random speckle noise on a speckle interferogram makes it difficult to analyze by conventional techniques. For this reason, digital filters must be applied to reduce speckle noise. In this article, a new image-processing method of digital speckle interferograms is presented, which can reduce speckle noise effectively. This method is based on FFT and low-pass filter in the frequency domain. According to the feature of spectrum of speckle interferograms, useful information can be reserved as well as the high frequency noise removed. A low-pass filter is presented and, as a typical case, a speckle interferogram of a spirit-lamp flame is processed by this method. The result is preferable and the signal-to-noise ratio of the speckle interferogram is improved greatly, which indicates this method is practical and valuable in the visualization of thermal flow using DSPI.

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