Ijiro is a robot which expresses emotions reacting a user's actions. Boldly, it consists of a matrix LED, an accelerometer and a cylinder case. Ijiro doesn't have any actuators. Then it isn't able to move itself. A user, however, can have it touching, lying, standing, swinging, hanging and so on and it senses a user's actions. Then, it expresses emotions with face in the display and voice from the speaker. For example, if a user swings it softly, it reacts smile back. But if a user swings it roughly, it reacts angry back.So, users will feel it like a baby. It, actually, is characterized baby's emotions based on cognitive science. Also, Ijiro's shape is designed a cylinder. It is considered to get various user's actions because only a cylinder can be stood, lied, rolled and so on in primitive shapes. Ijiro has been developed to make a friendship through the emotional interaction between people and machines. We showed it to people at our school museum and a kinder garden. As the result, we saw many people was laughing and surprising with Ijiro's interaction. Now we continue to improve it using with an OLED display, an internal speaker and so on.

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In the shape modeling with 3D CAD systems, the trimmed surface is quite popular. For instance, Japanese Industrial Standards (JIS) models contain a lot of notches, expressed using trimmed surfaces. Since trimmed surfaces are directly modified in direct modeling, it has a big restriction in the shape modification. It is effective to apply a new free-form surface to a closed region composed of the modified edges because the consistency of a trimmed surface can be maintained. This paper proposes the method of fitting a free-form surface by using the offset curve. To be more concrete, an offset curve is generated according to the tangent planes and a point cloud is generated. After that, a B-spline surface is generated using the generated point clouds and the boundary curves, so that a new trimmed surface is generated. Our method is effective for direct modeling that directly modifies the boundary edges of the trimmed surface representing a notch shape.

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We present a method for removing rosette pattern from a scanned color image. Rosette pattern is generated by printer to obtain visually good effects. But this leads to objectionable artifacts when the image is scanned with high quality. Rosette pattern has period and direction. In order to estimate them, we use Radon transform in frequency-domain. Finally, we replace elements corresponding to the above period and direction to zero and, compute the inverse Fourier transform. As a result of experiments, it’s clarified the proposed method can remove rosette pattern.

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This paper presents a personal photograph browser, which intuitively displays photographs from their shooting locations and times, as well as persons, and assists the analysis of history of photograph owners. It supports linked two views; one of the views displays photographs clustered based on their locations and times in 3D space, and the other displays persons clustered based on their co-occurrence in the events. This browser can be a life log analysis tool to explore the events of photograph owners.

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