Provided is an image processing method. The image processing method includes obtaining at least one stencil mask region for a current frame, obtaining a first velocity field corresponding to a radial spreading from a central point of the at least one stencil mask region, obtaining a final velocity field for the at least one stencil mask region based on the first velocity field, determining a pixel value included in the at least one stencil mask region based on the obtained final velocity field, and displaying the current frame according to the determined pixel value.