Picture verification code anti-cracking processing method, verification method, device and system

The invention discloses a picture verification code anti-cracking processing method, a verification method, a device and a system, and relates to the technical field of computers and information security. According to the technical scheme provided by the invention, firstly, a verification code image with the same color as a base picture is generated from a randomly generated real verification code; a verification code image and an interference image with different colors are combined into multiple frames of verification code display images, so that each frame of verification code display image only displays part of the contour of a real verification code, the other parts are hidden through the same base map color, and then the multiple frames of verification code display images are integrated into a display image sequence for playing. By utilizing the persistence effect of the human eyes and the visual illusion of the illusion contour, the illusion contour which can be recognized by the user is formed by accu