A method is provided for a three-dimensional (3D) display system. The method includes obtaining a plurality of original images of a plurality of viewpoints in a 3D image, detecting a type of a display device for displaying the 3D image, and determining a total number of required images based on the detected type of the display device. The method also includes determining whether the total number of required images is equal to a total number of the plurality of original images, and adjusting the plurality of original images such that the total number of required images are provided, when the total number of required images is not equal to the total number of the plurality of original images.