Is to provide an evaluation method of an object with which can perform correct evaluation for the object having a pearl color, pearl color. By making multiple imaging by changing the exposure in the image measuring device 1 the measuring object 2 which is illuminated by the white light source 3, an image data acquisition step of acquiring image data having different exposure, the image data of the plurality of acquired By combining, a wide-DR image data generation step of generating (hereinafter,. referred to as "wide-DR image data") the image data with a wide brightness dynamic range, based on the pixel values of the wide-DR image data, the wide-DR evaluation method has an evaluation value calculating step of calculating the skewness of brightness values in the processing target area of the image data, evaluates the gloss based on a skewness of brightness values.
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