Journal
COMPUTERS AND ELECTRONICS IN AGRICULTURE
Volume 142, Issue -, Pages 70-78Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compag.2017.08.018
Keywords
Biospeckle; Real-time processing; Image analysis
Funding
- Polish National Budget for Science [0237/IP1/2015/73]
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This paper describes a simple and efficient approach for the real-time evaluation of biospeckle spatial activity using a live video stream. The proposed method combines the exponentially weighted averaging of time-series data with a calculation of the Fujii biospeckle activity index. The exponentially smoothed Fujii method (ESF) was compared with the conventional offline method. A comparison was carried out using the speckle data of apple fruit with a fungal infection. Using data from a model experiment it was shown that the proposed method is capable of producing consistent and reliable results which are comparable with results obtained using the conventional approach. The exponentially smoothed Fujii method (ESF) provided high contrast maps of biospeckle activity without any loss of resolution. Reasonable computational demands made the practical implementation of this method possible using a standard desktop computer. (c) 2017 Elsevier B.V. All rights reserved.
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