The invention relates to a picture processing method and device and a computer readable storage medium. The method comprises the following steps that: according to the edge line of an object to be identified in an original picture, determining the practical coordinate of each vertex of the object to be identified under a first coordinate system; according to the edge line of the object to be identified, determining the standard size of the object to be identified, and according to the standard size, obtaining the standard coordinate of each vertex of the object to be identified under the firstcoordinate system; and according to the practical coordinate and the standard coordinate of each vertex, solving a distortion correction matrix, and utilizing the distortion correction matrix to carry out correction processing on the original picture to obtain a corrected picture. By use of the scheme provided by the invention, the automatic correction of the object to be identified in the original picture can be realized.