The dynamic response of image sensors has a salient effect on the image quality

characterized by image blurring

the distortion of geometrical size and gray of objects

when the sensor is moving relatively to sceneries.A particular experimental setup was designed upon the mechanism of charge coupled device(CCD)

the gray data containing the response information were extracted from the concerned pixels of the motion image

and then the dynamic characteristic was modeled by processing the extracted gray data with Least-square algorithm.The result indicated that the dynamic response of CCD sensors could be expressed as an amendatory first-order system

a model with agreeable accuracy due to the fitting error approximating to 0.2.The testing method is practical and can resolve the general problems in both machine vision and related dynamic images.