A virtual image processing method, an image processing system, and a storage medium used for realizing virtualization of a captured picture, the method includes the following steps: acquiring a reference position and a real-time position of a camera device; calculating a movement parameter of the real-time position relative to the reference position; virtualizing, according to the movement parameter, the position and the posture of the virtual camera device, and calculating a perspective parameter of a scene to be replaced with respect to the virtualized virtual camera device; encoding a virtual scene according to the perspective parameter; and using the encoded virtual scene to replace the scene to be replaced.