he purpose was to measure the color of safety belt's gas generator by the method of machine vision. First, color CCD camera was use to get the color images of the components. Then the software (NI LabVIEW)was used to process those images easily. The color cast adjustment of those images and image filtering were made to get the desired images. Then the color values of different gas generators were saved as standard templates. The values of the template were matched with the detecting members to determine the component's color.