Shape Analysis of Agricultural Products

Abstract

In this study, automatic detecting and sorting were attemped for the shape of agricultural products by using an opto-electronic system that consists of an opto-electronic line sensor and minicomputer. Because of using the line sensor for detecting, this system is simple and less expensive as compared with the system that made up of ITV camera or image sensor.
Basing on the shape index which was calculated from Walsh-transform, the properties of shape were derived from the detected shape.
In experiment, the satsuma oranges, tomatoes and apples were tested and calculated for the shape index. Additionally, the satsuma oranges were attemped to sort into two groups A and B basing on the shape index. This method seems to be valid as compared with the results that were obtained from manual sorting in the fruits sorting plant.