Method and arrangement for analysing an object

摘要

A method and arrangement for determining at least one dimension data for a body (11), specially data relating to centroid coordinate of an image of said body reproduced on a sensor (15) that produces a signal containing pixel data for said reproduced image (16). The method comprising: interpolating said signal and calculating a centre (xk) for a length (lk) of a segment representing a section of said image, and using said calculated centre (xk) and said length (lk) to determine the centroid coordinate (x') by summing all the products of the n power of the said lengths (lk) and centre point of each segment divided by the sum of the n power of said length (lk).