The invention provides a method for correcting image
barrel distortion. The method comprises the steps of forming a
lookup table according to relations of an ideal coordinate of pixels prior to image
distortion and a
distortion factor, calculating distances R<x> and R<y> of the ideal coordinates (x, y) on an x direction and a y direction relative to an original point, enabling a central point coordinate (xc, yc) (x, y) of an image be set to be the original point, and obtaining the equations that R<x>=xc-x and R<y>=yc-y; calculating a K value, calculating a
distortion factor S, and obtaining the ideal coordinate corresponding to a distortion coordinate according to relations between the distortion coordinate and the ideal coordinate; endowing a pixel value of the distortion coordinate to the ideal coordinate, and forming a corrected image according to the ideal coordinate and the pixel value of the distortion coordinate. The invention further provides a device for correcting image
barrel distortion and an
image processing device. According to the method and device for correcting image
barrel distortion and the
image processing device, operation quantity can be reduced, barrel correction is achieved rapidly and effectively, a memory which is low in cost can be used, and the cost is reduced.