Patent ID: 6718056
Filing Date: 2004-04-06
Classification: G06T,H04N

Abstract:
A method for a radiographic image of an object comprising the steps of:a) providing a real histogram of the radiographic image; b) providing a mathematical model of an image chain and the object; c) determining two values of gray level, defined as gray min and gray max, which delimits a useful zone from the mathematical model of the image chain and the object and of a set of parameters of acquisition, of a detector, of a positioner and of the object; d) suppressing a part below gray min and a part above gray max in the real histogram to define a limited histogram; e) applying a set of rules to the limited histogram in order to determine a level of brightness; f) obtaining the contrast from the level of brightness; g) wherein a correlation is made between the limited histogram and a mathematical model of the real histogram in order to determine the value of a radiologic thickness characterizing the object.