An embodiment of the present invention discloses an image processing method, an apparatus, and a device. The method is applied to a terminal having two specially manufactured cameras. A first sub-image that is of a to-be-photographed object and that is photographed by a first camera is obtained, where a corresponding field-of-view range is [0, θ1]; a second sub-image that is of the to-be-photographed object and that is photographed by a second camera is obtained, where a corresponding field-of-view range is [θ2, θ3], and quality of the first sub-image and the second sub-image satisfies a definition requirement of an extra-large aperture; and the first sub-image and the second sub-image are spliced and fused to obtain a target image that has a larger field-of-view range and satisfies the extra-large aperture.