1. An image display apparatus comprising: a storage unit that stores moving picture contents in which frame information indicating a characteristic of each frame is added to any one or all of a series of frames constituting a moving picture, and content information indicating a characteristic of each of the moving picture contents; a content selecting unit that selects a moving picture content to be processed from the moving picture contents stored in the storage unit; a first relevant degree calculator that calculates a degree of relevance between the moving picture content to be processed and respective other moving picture contents, based on a similarity between content information related to the moving picture content to be processed and content information related to the moving picture contents other than the moving picture content to be processed stored in the storage unit; a frame selecting unit that selects at least one frame contained in the moving picture content from the moving picture content to be processed, as a frame to be processed; a second relevant degree calculator that calculates a degree of relevance between the moving picture content to be processed and respective other moving picture contents, based on a similarity between frame information added to the frame to be processed and frame information added to the frames in other moving picture contents; an image analyzing unit that analyzes an image characteristic of an image contained in the frame to be processed and each frame constituting other moving picture contents; a third relevant degree calculator that calculates a degree of relevance between the moving picture content to be processed and respective other moving picture contents, based on a similarity between an image analysis result of the frame to be processed and an image analysis result of frames in the other moving picture contents; a content relevance calculator that calculates a comprehensive degree of relevance of each of the other moving picture contents with respect to the moving picture content to be processed, using the degree of relevance calculated by at least one of the first relevant degree calculator, the second relevant degree calculator, and the third relevant degree calculator; a display-content selecting unit that selects a moving picture content to be displayed from the other moving picture contents, based on the comprehensive degree of relevance calculated by the content relevance calculator; a content visualizing unit that generates a visualized content obtained by symbolizing the moving picture content to be processed and the moving picture content to be displayed, respectively; a locating unit that locates a visualized content corresponding to the moving picture content to be processed in a virtual space, and respectively locates a visualized content corresponding to each moving picture content to be displayed at a position away from a layout position thereof according to the comprehensive degree of relevance of each moving picture content to be displayed; a space visualizing unit that visualizes the virtual space, in which the visualized content is located, in a displayable state; and a display unit that displays the visualized virtual space.