Applications of Computer Vision for Defect Detection in Fruits: A Review

Visual appearance in grading fruits and vegetables play a crucial role on the customer preferences, market value, customer choice as well as internal quality. The surface defects are characterised by colour, texture, shape and size. Over the recent decades variety of vision systems have been designed to inspect and evaluate the quality produce of fruits and vegetables. Among these freuquently used and popular are the hyperspetral and multispectral system used as large scale in food industries along the automation line. Many researchers have designed the computer vision systems in automated industrial operations that help to capture images and extract the details of the infected area of the product. This paper provides a detailed over view of different computer vision systems, pre-processing techniques, segmentation methods, features - colour, texture and morphological as well as different classifiers applied in quality inspection of different fruits.