Patent ID: 8487999
Filing Date: 2013-07-16
Classification: G01B,G01N

Abstract:
1. An apparatus for measurement of a surface profile capturing 2D-image of a surface of an object, the apparatus comprising; a first light source illuminating a first one-color light to the surface of the object; a second light source illuminating a second one-color light of which color is different from the first one-color light to the surface of the object; a black-and-white camera capturing the first one-color light and the second one-color light reflected from the surface of the object, which are illuminated from the first light source and the second light source; and a controller controlling the first light source, the second light source and the black-and-white camera to obtain a first black-and-white image data and a second black-and-white image data corresponding to the first one-color light and the second one-color light respectively in the state that the first one-color light and the second one-color light are illuminated to the surface of the object, and generating a synthesized color image of the surface of the object using the first black-and-white image data and the second black-and-white image data wherein the first one-color light comprises one of a green-color light and a blue-color light, and the second one-color light comprises a red-color light, the controller calculates a third black-and-white image data corresponding to one of the green-color light and the blue-color light on the basis of the first black-and-white image data obtained by the illumination of the other of the green-color light and the blue-color light and of the second black-and-white image data, and generates the synthesized color image by synthesizing the first black-and-white image data, the second black-and-white image data and the third black-and-white image data, and the controller calculates the third black-and-white image data using a formula of I