COLORIMETRY DEVICE, COLORIMETRY SYSTEM AND COLORIMETRY METHOD

摘要

PROBLEM TO BE SOLVED: To conduct colorimetry for each part of an object having surfaces with concavity/convexity and/or curved surfaces with high accuracy in short time.SOLUTION: A colorimetry device comprises: a shape measurement unit that generates shape data expressing a three-dimensional shape of a surface of an object; a light irradiation unit that irradiates the object with light; and an image pick-up element that has a plurality of pixels each receiving reflection light from the object, and outputting a signal in accordance with an amount of received light, and further comprises: a colorimetry unit that measures each color information on a plurality of parts of the object corresponding to the plurality of pixels on the basis of each output signal of the plurality of pixels; a storage unit that stores coefficient data expressing a relation between a correction coefficient for correcting the color information and a distance to the part having the color information in the object measured as to each of the plurality of pixels; and a correction computation unit that acquires the correction coefficient in accordance with the distance to the corresponding part of the object as to the plurality of pixels on the basis of the coefficient data and the shape data generated by the shape measurement unit, and conducts a computation of correcting a measurement value of each color information measured by the colorimetry unit, using each acquired correction coefficient.SELECTED DRAWING: Figure 1