Patent ID: 7092105
Filing Date: 2006-08-15
Classification: G01B

Abstract:
1. A method for measuring the three dimensional surface shape of an object using color information of light reflected by the object, comprising the steps of: a), by multi-wavelength lighting means set above and to one side of the object, projecting a beam of light having a plurality of wavelengths onto the object; b), by detection means set above and to another side of the object, detecting color distribution information with respect to levels of the object on which the light beam is projected at the step a); c), by calculation means, transforming the color information detected by the detection means at the step b) to a hue value; d), by calculation means, calculating a level information of two dimensions using the hue value obtained at the step c); and e) repeating the above steps as, by moving means, moving one of the object and detection means, and, by the calculation means, analyzing calculated level information of two-dimensions, thereby obtaining level information of the three-dimensional shape.