Interaction Design (IxD), which is defined as the design of how a user communicates or interacts with a computer, has been growing in importance in recent years. Of particular note are new interface methods that go beyond the capabilities of legacy devices such as the standard mouse and keyboard. In this study, we focus on such IxD innovations. Even though research into intellectual property (IP) management issues pertaining to IxD is important, there are no established precedents. We begin by researching case examples that use present legal practice concerning IP, and examine how this legal practice is applied. We also examine problems with applying present legal practice to IxD issues, and consider the opinions of those who do not use present legal practice.

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We can image some objects that cannot exist. For example, M.C. Escher drew some "impossible objects" in his works, which we can see as "real objects" despite those cannot be created in real. If we can express imaginable objects as impossible objects, that will extend our creation potential. In this thesis, we propose techniques that create illusion expression by combining several image buffers in real time, and describe those algorithms and sample works. Using those techniques, it is able to show impossible objects as real objects and depict temporal-spatial distortion objects. Those methods are planar process that only combining images using pixel information. Nevertheless, we obtain expressions like using depth information.

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Visual simulation of natural phenomena is one of the most important research fields in 3DCG. Many methods were developed for representing natural phenomena. These methods are used in many fields such as education and industry. We focus on aurora which is light emission phenomena and appears the sky of Polar Regions. Visual simulation of aurora generates dynamic animations by using feature of aurora such as form and motion and colors and generating mechanism. We propose a new approach for simulating and rendering aurora. The proposed method can reproduce motion of aurora, which render the various aurora emission colors. Our method reproduces motion of aurora by simulating the movements of charged particles. In this paper, we use a square grid for simulating the electromagnetic field, which calculates forces acting on the charged particles by simulating the electromagnetic field. The particle positions are iteratively updated, and the grid size is also updated after every iteration so that all the particles are always within the region of the grid. The proposed method reproduces the various aurora emission colors by simulation of the emission process and the light attenuation. Our experimental results indicate the effectiveness of the proposed system.

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This paper presents a method for extracting and modifying features for illustrating stone tools. Features are detected from unorganized point clouds obtained by a 3D laser scanner. The curvature of each point in the point clouds is estimated by local surface fitting algorithm and used for detecting potential feature points. Feature lines are extracted by directionally growing algorithm. Our directionally feature line growing method is simple to detect feature lines from unorganized point data. The main idea of our method is to extract feature lines using principal curvatures and principal directions of the potential feature points along the axis directions and to merge all extracted lines. In the illustration of stone tools, to maintain form and manufacturing information, it requires to modify the detected features by specific knowledge on illustrating stone tools. Using the power of data parallel computation on the GPU, our method can be accelerated multiple times. Finally, our experimental results are compared to the actual illustrations drawn by archaeological illustrators.

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In this paper we present “Seurat Brush”, which is a drawing brush tool for making artwork of pointillism on a computer. The drawing process of pointillism is really tough as enormous points need to be put onto a large canvas. Therefore we are providing a new brush tool which can automatically generate a lot of points that look like pointillism along a brush stroke by the user. We extract the drawing features of the existing pointillism paintings to apply them to our brush tool. Among many pointillism artists, we especially focus on George Seurat who was the founder of pointillism. According to the results of our analysis, we obtained two general theories of pointillism which are the divisionism and complementary contrast. In addition we observe that Seurat’s painting has unique features such as the drawing points of sunlight, white color mixture, etc. With our analyzing results, we have built “Seurat Brush” which can draw artwork of pointillism more easily and effectively. With our experimental results which are the imitation of Seurat’s masterpiece generated using our brush, we have demonstrated the effectivity and practicality of the “Seurat Brush”.

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This paper presents a technology for supporting in-house forensic CG video generation by police and prosecution. For confidentiality, it is usually not allowed to generate criminal CG video through subcontracting, whereas existing CG modeling and video editing systems are too complicated to use for police or prosecution. The proposed technique solves this problem with Augmented Reality (AR) technology. We propose to deploy multiple cameras and AR markers on criminal site. While a user of the police or the prosecution plays a role of the criminal wearing a video see-through head mount display, video is automatically generated. CG objects, such as the virtual victim, are displayed on the head mount display and rendered in the video. Our main contributions in this research are concurrent displaying of first-person and third-person views for visualizing spatial relationship between the user and its surroundings, and complementary use of marker information from multiple cameras for solving the occlusion problem inherently caused by operating at the actual criminal site.

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