We propose a new method of generating a mesh which element size gradually varies while satisfying the constraints given by user. This method generates a smooth node spacing function defined over the given geometric domain by using minimization of the distortion energy of a thin plate bending model. In the mesh area where element size varies greatly, badly distorted elements are generated. Our method generates well-shaped and well-graded mesh, because node spacing function varies smoothly.

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We implement a graphical user interface that automatically transforms a figure input by a mouse into a regular figure which the system infers is the closest to the input. The difficulty lies in the fact that unlike pattern recognition the classes into which the input is to be classified have inclusion relations among themselves. This prohibits us from choosing the closest class measured by some distance criterion. In this paper, we illucidate the issue and show that this problem can be resolved by introducing the geometric information criterion (AIC). We describe the outline of the principle and show system execusion examples.

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We developed a placement planning technique of temporary scaffolds to support the operation that construction of power plant was planned. In this technique, distribution of necessary degree about scaffold placement is calculated from CAD data of plant according to distance from objects executing the work. The distribution is handled as conditions of placement, and optimum scaffold placement is decided by genetic algorithm. Because the gene information that scaffold placement is expressed is memorized in image memory of computer, we can show the situation of genetic calculation intelligibly. This technique could present the scaffold placement plan which fitted the conditions, and placement plan of temporary scaffolds became easy than before.

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Humanbeing are enjoys watching the natur and works of art. Enjoyment of watching depends the quolity of information throough by vision. Some of visual information makes persons confortable through human visual sistems. So we tried to investigate condition of the measurment about visual information which gives confatable to fieling humanbeings.

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The authors have been developing a proprietary digital paint system named Pumpkins (a Painting Unit of Multi-Purpose Kind and INtelligent Stationery). The system can be differentiated from existing commercially - avail ones in that it provides artists and designs with a new drawing tool with water-soluble colored pencils. In this paper, the process of water-soluble pencil drawing is analyzed to reveal the fundamental two subprocesses : initial pigment distribution and redistribution of pigment with water. Then the latter subprocess is focused on, and spreading and blending of pigments with water is modeled by extending a recent image filtering LIC (Line Integral Convolution, B. Cabral, et. al., 1993).

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This paper is the second report about the automatic image creating algorithm for hand painting type images which is included in nonphotorealistic rendering. In this method, a natural image is analyzed by image analysis technique and the image which has the feature of the hand painting type image is created. In this paper, we describe the paint color mixture calculation on a computer, the painting algorithm which uses that calculation and other painting algorithm based on a blur technique. The resulting images show that the images painted by some kind of expression can be created by a computer.

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We propose an integrated media handling environment COMI & CS(Computer Organized Media Integration & Communication System). The environment provides users to handle various kind of media combination according to their familiar manner of content creation. And new media handling ways can be composed of facilities which provided by the environment. The framework is explained using media handling examples based on our experimental system. Furthermore, in order to implant wide variety of facilities into such environment systematically, a conceptual layered environment model is also introduced.

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