1993 Volume 113 Issue 3 Pages 357-363
This paper discribes about a new algorithm for digital length measurement. In this algorithm, the way of data access is Skipped Dual Lines raster Scanning, so it is named “SDLS” method. Using SDLS, the contour length of binary image can be measured with high speed and high accuracy. Theoretical expression of contour length based on SDLS method is derived for the figure which consists of linear edge. In case of square and circle figure, it is proved by the computer simulation that the most accurate data is obtained when skip number=1. As these results, SDLS method is very useful for industrial application, especially for measuring moving objects.