An image processing method and an information processing device are provided. The information processing device may include a processor, which may be configured to: construct a three-dimensional face model based on a face object in a two-dimensional image; determine a correspondence between the constructed three-dimensional face model and the face object in the two-dimensional image; determine, based on the correspondence, an area of interest of a key point in the two-dimensional image using an area of interest near a corresponding key point in the three-dimensional face model; and extract an image feature from the determined area of interest in the two-dimensional image as an image feature of the key point.