The relationship between SCI and SCE methods (color and gloss)

SCI and SCE methods are two common ways to measure color and gloss.

The SCI method (specular component included) refers to the measurement method that includes both specular light and scattered light reflected by the sample surface. This method can accurately reflect the gloss and color of the sample surface, and is suitable for measuring glossy samples.

The SCE method (specular component excluded) refers to the measurement method that only measures the scattered light on the surface of the sample during measurement. This method ignores the specular light reflected by the surface of the sample and only measures the scattered light on the surface of the sample, so it is suitable for measuring matte or semi-glossy samples, such as paper, cloth, etc.

In practical applications, SCI and SCE methods are often used at the same time to fully reflect the color and gloss characteristics of the sample. At the same time, the measurement results of SCI and SCE methods can also be converted to each other. In general, the color value of the SCI method is higher than the color value of the SCE method, because the SCI method reflects the gloss of the sample surface, and the SCE method ignores this part of the information. Therefore, corrections need to be made when converting color values between SCI and SCE methods.