Shelf-life study of Java Plum (Syzygium Cumini) by laser speckle B/D Pixel counting technique

Abstract

In this paper, shelf-life period of fruit Java Plum or Black Plum (Syzygium cumini) is assessed by biospeckle image analysis techniques. Laser biospeckle method is a non-destructive and non-invasive optical technique. This study was carried out through capturing the temporal history of the speckle pattern (THSP) by illuminating the surface of the fruit with a high coherent laser beam. The biological activity has been inferred from the changes of intensity fluctuations with respect to time. These changes have been measured from beginning to end by means of correlation functions. As a novelty, numerical analysis of the binary images with B/D pixel counting method reflects the state of investigated object.