Abstract: Three-dimensional image processing has two processes. In a first process, a three-dimensional space including only a horizon appears on a display screen. By drawing a stroke line in the space, a wall having the stroke line as the base line is set as a canvas. A picture drawn by a user is mapped onto the canvas, resulting in a three-dimensional picture. By repeatedly setting the canvases and pictures, a desired scene can be constructed. A desired three-dimensional scene can further be obtained by rotating the canvas or moving the viewing point. In a second process, the base line of the canvas is constantly displaced between a first curve, a second curve, and an interpolation curve. The three-dimensional image pasted on the canvas is moved in accordance with the movement of the canvas. Thus, it appears to the user that the three-dimensional image is animating.

Abstract: An RF tag 25 is incorporated in a mouse 20, and an RF tag reader 15 is mounted on the main body side of a computer 10. When using the mouse 20 to a specified computer 10, a user moves the mouse close to the reader 15 to read identification information (ID) of the mouse 20, which is included in the RF tag 25. On the main body side of the computer 10, the mouse 20 is designated in accordance with the read ID and communication with the mouse 20 is set.

Abstract: In an image editing apparatus, a mouse and a display function as a drawing interface, such as a digital canvas, a palette, and a pen or a brush. A stroke input by a user by dragging the mouse is regarded as a hand-drawn operation with the pen or the brush. In the digital canvas, painting is performed by using inks having various attributes and activities such as texture and animation, based on the stroke input by the user.

Abstract: At least a part of the three-dimensional community space is divided into regions and the right to use a region is sold at a particular price to a user who wants to obtain it. A user having the right to use a region is allowed to build an element such as a building or a signboard in the region via an avatar. If an attractive signboard with high originally is built, the region in which the signboard is built and also nearby regions become popular. As a result, the economic value of such a region becomes high. If desired, a user is allowed to resell his/her region via auction.

Abstract: Three-dimensional image processing has two processes. In a first process, a three-dimensional space including only a horizon appears on a display screen. By drawing a stroke line in the space, a wall having the stroke line as the base line is set as a canvas. A picture drawn by a user is mapped onto the canvas, resulting in a three-dimensional picture. By repeatedly setting the canvases and pictures, a desired scene can be constructed. A desired three-dimensional scene can further be obtained by rotating the canvas or moving the viewing point. In a second process, the base line of the canvas is constantly displaced between a first curve, a second curve, and an interpolation curve. The three-dimensional image pasted on the canvas is moved in accordance with the movement of the canvas. Thus, it appears to the user that the three-dimensional image is animating.