The disclosed embodiments relate to image processing methods and apparatuses. In one embodiment, a method includes: mapping an inputted three-dimensional (3D) model map into an asymmetric cubemap, the asymmetric cubemap located at a different place than the mapping center of the inputted 3D model map; and stretching the asymmetric cubemap mapped for the inputted 3D model map into a two-dimensional (2D) stretched plane map. Since the asymmetric cubemap is located at a different place than the mapping center of the inputted 3D model map, after the inputted 3D model map is mapped into the asymmetric cubemap and stretched into a 2D plane, the image resolution can be maintained in one face of the asymmetric cubemap and the image resolution can be reduced in other faces, so that high image resolution in an ROI of a user can be maintained, and the resolution of regions away from the ROI can slowly decrease, thereby lowering the overall resolution of the 2D stretched plane map and reducing the amount of data for subsequent processing.