Patent ID: 7483550

Claim:
A method for evaluating moving image quality of displays based on a blurring of a scrolled test pattern displayed on a screen of a display device subject to evaluate, the method comprising the following steps (a)-(f) of: (a) capturing an image of the scrolled test pattern while the test pattern being scrolled and the field of view of an image sensor pursuing with a move of the test pattern; (b) observing a first blurred edge along a scrolling direction that appears in the captured image of the scrolled test pattern; (c) capturing an image of a still test pattern by the image sensor while moving the field of view of the image sensor at a same velocity as that at which the field of view of the image sensor pursues a move of the scrolled test pattern; (d) observing a second blurred edge along the scrolling direction that appears in the captured image, which is the image of the still test pattern captured by the image sensor; (e) estimating the moving velocity of the scrolled test pattern based upon the second blurred edge width and the exposure time of the image sensor at which the image of the still test pattern was captured, and normalizing the first blurred edge width by using the estimated moving velocity of the scrolled test pattern; and (f) evaluating moving image quality of the screen with use of the normalized first blurred edge width.