White-light biospeckle displacement analysis for the assessment of fruit quality

This Letter introduces a novel, to the best of our knowledge, method for assessing fruit quality using white-light biospeckle displacement analysis. The primary aim is to demonstrate that speckle displacement behavior differs between healthy and decaying regions, offering a unique means of gauging bioactivity levels, a feature that has not been explored in previous biospeckle research. By examining speckle displacement vectors over time, significant differences were observed in the displacement patterns between healthy and decaying regions within the fruit tissue. Clustering techniques based on the size and direction of these vectors enabled sharp discrimination between these tissue states. The results indicate that analyzing biospeckle displacement behavior over the observation period provides valuable insights into dynamic processes within the fruit, facilitating a non-invasive evaluation of its quality.