The present invention discloses a method of evaluating image quality taken in an actual scene, the method comprising: providing a test chart placed in an actual scene, said test chart comprising a plurality of positioning patterns and a plurality of quality test patterns; capturing an image of the test chart in the actual scene; searching the plurality of positioning patterns in the image of the test chart to locate the orientation of the image of the test chart; and identifying the plurality of quality test patterns in the located image of the test chart and evaluating the image quality of the plurality of quality test patterns.