Length measurement for moving products on conveyor belt

This paper presents an entirely new method which achieves precise length measurement of products on conveyor belt at high speed. Recently, the automatic length measurement of products in motion is coming to assume greater importance in industrial fields. Then, making the best use of the conventional length measurement on a conveyor, we propose a new length estimation method for moving products with a digital image taken by a handy digital camera. In our previous paper, we gave a brief explanation of the length measurement with a digital image and pointed out some technical problems in obtaining lengths with high accuracy. In this paper, we demonstrate the result of applying our method to real data of digital images having different dimensions. In particular, the interest is centered on an estimation method of the length of products making a slanting angle with the fixed direction of a conveyor.