An image processing system according to an embodiment includes a stereoscopic display apparatus, a rendering processor, and a display controller. The stereoscopic display apparatus displays a stereoscopic image enabled for a stereoscopic vision using a plurality of parallax images. The rendering processor generates a plurality of parallax images by applying a rendering process to volume data that is three-dimensional medical image data from a plurality of viewpoint positions having different relative positions with respect to the volume data. The display controller causes the stereoscopic display apparatus to display a graphic image that is an image of a given graphic indicating a depth-direction position of a cursor that is operable by a given input unit in a three-dimensional stereoscopic image space in which a stereoscopic image is displayed, together with the parallax images.
