The invention discloses a non-
contact type color detecting method based on a
digital image technology. The non-
contact type color detecting method comprises the following steps: collecting image
color data of a standard color card under a standard
light source in a
color matching observation box through a
digital camera, and obtaining a conversion relation between the image
color data and the standard color card by combining with an XYZ spectrum tristimulus value of the standard color card; measuring image
color data of a standard sample and a batch sample under the standard
light source in the
color matching observation box by using the
digital camera, computing XYZ spectrum tristimulus values of the standard sample and the batch sample through the conversion relation obtained by the standard color card, computing related
chromatic aberration based on the XYZ spectrum tristimulus values of the standard sample and the batch sample, and judging whether the color meets the requirement or not according to the requirement on quality of a detected article. According to the non-
contact type color detecting method based on the
digital image technology, disclosed by the invention, the artificial influence factors of
visual inspection are removed, and compared with a
visual inspection mode, the accuracy of a testing result is higher and more reliable; the color of a colorful picture, a curved surface or the surface of an article which is uneven and is mixed in colors and nonuniform or irregular in coloring can be measured, and the using range is wider.