{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:24:33Z","timestamp":1760235873122,"version":"build-2065373602"},"reference-count":86,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2021,9,30]],"date-time":"2021-09-30T00:00:00Z","timestamp":1632960000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>One of the most important features of the proper operation of technical objects is monitoring the vibrations of their mechanical components. The currently significant proportion of the research methods in this regard includes a group of research methods based on the conversion of vibrations using sensors providing data from individual locations. In parallel with the continuous improvement of these tools, new methods for acquiring information on the condition of the object have emerged due to the rapid development of visual systems. Their actual effectiveness determined the switch from research laboratories to actual industrial installations. In many cases, the application of the visualization methods can supplement the conventional methods applied and, under particular conditions, can effectively replace them. The decisive factor is their non-contact nature and the possibility for simultaneous observation of multiple points of the selected area. Visual motion magnification (MM) is an image processing method that involves the conscious and deliberate deformation of input images to the form that enables the visual observation of vibration processes which are not visible in their natural form. The first part of the article refers to the basic terms in the field of expressing motion in an image (based on the Lagrangian and Eulerian approaches), the formulation of the term of optical flow (OF), and the interpretation of an image in time and space. The following part of the article reviews the main processing algorithms in the aspect of computational complexity and visual quality and their modification for applications under specific conditions. The comparison of the MM methods presented in the paper and recommendations for their applications across a wide variety of fields were supported with examples originating from recent publications. The effectiveness of visual methods based on motion magnification in machine diagnosis and the identification of malfunctions are illustrated with selected examples of the implementation derived from authors\u2019 workshop practice under industrial conditions.<\/jats:p>","DOI":"10.3390\/s21196572","type":"journal-article","created":{"date-parts":[[2021,10,10]],"date-time":"2021-10-10T21:37:49Z","timestamp":1633901869000},"page":"6572","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Motion Magnification of Vibration Image in Estimation of Technical Object Condition-Review"],"prefix":"10.3390","volume":"21","author":[{"given":"Micha\u0142","family":"\u015amieja","sequence":"first","affiliation":[{"name":"Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, 46 A, S\u0142oneczna St., 10-710 Olsztyn, Poland"}]},{"given":"Jaros\u0142aw","family":"Mamala","sequence":"additional","affiliation":[{"name":"Department of Mechanics and Structural Engineering, Faculty of Civil Engineering and Architecture, Opole University of Technology, 45-061 Opole, Poland"}]},{"given":"Krzysztof","family":"Pra\u017cnowski","sequence":"additional","affiliation":[{"name":"Department of Mechanics and Structural Engineering, Faculty of Civil Engineering and Architecture, Opole University of Technology, 45-061 Opole, Poland"}]},{"given":"Tomasz","family":"Ciepli\u0144ski","sequence":"additional","affiliation":[{"name":"I-Care Polska Sp. z o.o., ul. Puszkarska 9, 30-644 Krak\u00f3w, Poland"}]},{"given":"\u0141ukasz","family":"Szumilas","sequence":"additional","affiliation":[{"name":"I-Care Polska Sp. z o.o., ul. Puszkarska 9, 30-644 Krak\u00f3w, Poland"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"6183","DOI":"10.1016\/j.matpr.2020.10.506","article-title":"Investigations on suitability of MEMS based accelerometer for vibration measurements","volume":"45","author":"Manikandana","year":"2021","journal-title":"Mater. Today Proc."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"735","DOI":"10.1109\/JSEN.2019.2943931","article-title":"Motion Induced Eddy Current Sensor for Non-Intrusive Vibration Measurement","volume":"20","author":"Xue","year":"2020","journal-title":"IEEE Sens. 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