Patent ID: 7679747

Claim:
A gloss measurement apparatus that emits light from a light source and finds an evaluation value, which represents a glossiness of an object to be measured, on the basis of specular reflected light which is reflected by the object to be measured, the gloss measurement apparatus comprising: an acquisition component, which acquires image information in accordance with received light amounts, at predetermined respective pixels, of specular reflected light from a surface of the object to be measured; a pixel gloss value calculation component, which calculates gloss values of the respective pixels on the basis of the received light amounts of the respective pixels of the image information acquired by the acquisition component; and an evaluation value calculation component, which calculates the evaluation value representing glossiness of the object to be measured on the basis of the gloss values calculated by the pixel gloss value calculation component, wherein the gloss value for each of the pixels is calculated by summing values obtained by multiplying respectively different coefficients with each of light amounts of R, G, B for each of the pixels, and the different coefficients are determined by imaging a sample of which the specular gloss value is already known, finding average values of the light amounts of R, G, B of the pixels from the sample, and performing regression analysis using the average values and the known specular gloss value.