An image correction method, comprising: obtaining a target image of a writing board displaying a standard image by means of a video camera in response to a trigger instruction (110); obtaining a first coordinate according to a preset algorithm, wherein the first coordinate is a coordinate of a marker in the target image (120); obtaining, according to a second coordinate and the first coordinate, a coordinate mapping relation between the image displayed on the writing board and an image obtained by the video camera, wherein the second coordinate is a coordinate of the marker in the standard image (130); and correcting the image obtained by the video camera as a blackboard-writing image according to the coordinate mapping relation after confirming that the image obtained by the video camera contains the writing board displaying a blackboard-writing image (140). Accordingly, also disclosed are an image correction apparatus and device, and a computer readable storage medium. The problem that the image distortion occurs in automatic capture of the blackboard-writing image to affect reading is solved, and the readability of the captured image can be improved.