Patent ID: 7990536

Claim:
A system for measuring reflectance of an object, comprising: a light source unit including a light source irradiating light to the object; a light source position adjusting unit that adjusts a position and a direction of the light source unit; a light receiving unit that acquires image data by detecting light reflected on the object; and a reflectance acquiring unit that acquires the reflectance of the object from the image data, wherein the reflectance acquiring unit acquires the reflectance of the object from the image data by using a correlation between a previously acquired video sensor and a spectral radiation luminance meter at the position of the video sensor, and wherein the correlation is acquired by setting a color chart at the position of the object, acquiring the image data by detecting the light reflected on the color chart in the video sensor, acquiring a luminance value by detecting the light reflected on the color chart in the spectral radiation luminance meter, and comparing the image data with the luminance value for each of R, G, and B channels.