In process of car panel detecting

due to influence of manufacturing process of detecting equipments

there is a tiny angular deflection existing in the image of car panel which taken by camera

the angle should be measured to promise the accuracy of car panel detecting.Corresponding coordinate data is obtained by image characters connected domain center coordinate algorithm

and then the image data is processed by least square linear fitting algorithm

at last

the tilt angle is calculated which is-0.6°.Connected domain of image character center coordinates straight line fitting angle calculation method is an improved algorithm

and the image horizontal tilt angle can be measured accurately by this improved algorithm in a short time.