In addition, according to an exemplary embodiment, the GPU 320 may generate an OSD image. For example, the GPU 320 may receive an OSD signal of content from the outside or receive an OSD signal of content stored in a storage. Alternatively, the GPU 320 may generate an OSD signal according to a user input or by itself. The GPU 320 may generate an OSD image based on the OSD signal received or generated by itself (the GPU 320 generates the OSD image by processing the OSD signal received or generated by itself, and a graphic source is not shown as a separate component). The OSD image is a screen image which includes various objects, such as an icon, an image, and a text, for various kinds of information and may include, for example, a UI screen image, various menu screen images, and a widget screen image. However, exemplary embodiments are not limited thereto and are provided by way of an example only.

The image display apparatus 300 may store the OSD image output from the GPU 320 in the graphics buffer 345. Unlike the 360° image, the OSD image stored in the graphics buffer 345 may be displayed on the display 360 without image quality processing thereon.

For example, as shown in the lower portion of FIG. 5, an OSD image 450 output from the graphics buffer 345 may be displayed on the display 360 together with the image-quality-processed image 440.