According to an exemplary embodiment, the processor 110 may convert an attribute of the graphics-processed first image. For example, the first image may be a 360° image, and the processor 110 may control a color space of a graphics-processed 360° image to be converted. For example, the processor 110 may control the color space of a graphics-processed 360° image such that the color space is converted from an RGB color space into a YUV color space. The 360° image of which the color space has been converted may be stored in the first buffer. The processor 110 may control the graphics-processed first image of which the attribute is converted stored in the first buffer. In addition, the processor 110 may perform image quality processing on the graphics-processed first image which is stored in the first buffer. For example, the processor 110 may control the 360° image stored in the first buffer such that image quality processing is performed on the 360° image. For example, the image quality processing on the 360° image may include a process of optimizing a cubic effect and a color sense of an image by improving a contrast ratio and color of the 360° image, a process of optimizing image quality by performing gamma correction on the 360° image, a process of enhancing sharpness of the 360° image by performing sharpness processing on an edge portion included in the 360° image, a process of alleviating a jagging phenomenon appearing in an image by adjusting resolution of the 360° image or performing anti-aliasing on the 360° image, and the like. The jagging phenomenon is a phenomenon appearing in a raster method of displaying a line with dots and indicates a phenomenon in which an outline is not smooth and becomes rough having a stepped shape and loses edge linearity, which occurs in an object such as a diagonal, a circle, or a curve.