IMAGE SPACE DISPLAY METHOD AND APPARATUS

An image space display method facilitates a user to grasp a feature space by assigning each feature to a respective one of dimensional axes of a display space. The image-space display method extracts features from images, hierarchically divides a feature space of the features, virtually converts the images into a tree structure, divides a display space according to the tree-structure, and displays the image space by displaying the images on each of the divided display spaces. In the method a tree-structure is generated for each of the features. Dimension data corresponding to a number of the features is generated by mapping each tree structure in one-dimension. The dimension data is displayed on the corresponding divided display spaces as display coordinate-axis data.