Electronic device for processing image, and operation method of electronic device

An electronic device for processing an image, the electronic device comprising:

• a first camera;
• a memory storing one or more instructions;
• and
• one or more processors configured to execute the one or more instructions stored in the memory,
• wherein the one or more processors is configured to execute the one or more instructions to:
• obtain a first image of a three-dimensional (3D) object comprising at least one surface by using the first camera, the at least one surface having a non-flat shape;
• identify a region of interest (ROI) within the first image of the 3D object, which corresponds to the at least one surface, by applying the first image of the 3D object to a first artificial intelligence (AI) model;
• identify first keypoints representing the ROI;
• obtain data about a 3D shape type of the 3D object by applying the first image of the 3D object to a second AI model;
• obtain a virtual object corresponding to the 3D shape type of the 3D object and a set of initial values of a 3D parameter of the virtual object;
• adjust the set of initial values of the 3D parameter of the virtual object, based on the first keypoints;
• obtain the adjusted set of initial values of the 3D parameter of the virtual object as a set of values of a 3D parameter related to at least one of the 3D object, the at least one surface, or the first camera;
• estimate the non-flat shape of the at least one surface, based on the set of values of the 3D parameter;
• and
• obtain a flat surface image in which the non-flat shape of the at least one surface is flattened, by performing a perspective transformation on the at least one surface.