Akifumi Makinouchi

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In this paper definitions of unnormalized relation, functional dependency on it and Normal Form are presented. The Normal Form plays a key role in our relational data model in which unnormalized relations are admitted as does the Third Normal Form of Codd in the data model of normalized relation. Properties pertaining to Normal Form are discussed(More)
OBJECTIVE To elucidate the differences in temporal processing between positive and negative facial expressions by using event-related potentials (ERPs) with spatially filtered images. METHODS Based on the traits of parallel visual pathways, four types of facial expression images (happiness, fear, anger and neutral) with low, high and broadband spatial(More)
New applications such as CAD, AI, and hypermedia require directrepresentation and flexible use of complex objects, behavioralknowledge, and multimedia data. To this end, we have devised a knowledgebase management system called Jasmine. An object-oriented approach in aprogramming language also seems promising for use in Jasmine. Jasmineextends the current(More)
This paper demonstrates an approach to image retrieval founded on classifying image regions hierarchically based on their shape, etc.). Particularly, we consider to automatically classify regions of outdoor images based on their semantics using the support vector machines (SVMs) tool. First, image regions are segmented using the hill-climbing method. Then,(More)
This paper presents a dynamic motion control technique for human-like articulated figures in a physically based character animation system. This method controls a figure such that the figure tracks input motion specified by a user. When environmental physical input such as an external force or a collision impulse are applied to the figure, this method(More)
In this paper, we present a novel technique for real-time cloth simulation. The method combines dynamic simulation and geometric techniques. Only a small number of particles (a few hundred at maximum) are controlled using dynamic simulation to simulate global cloth behaviors such as waving and bending. The cloth surface is then smoothed based on the elastic(More)
Many content-based video data indexing and retrieval systems have utilized the syntactic contents of the video sequences such as color, texture, and shape. And only a few researches have addressed indexing and retrieving video data by motion. In this paper, we present a method to automatically compute motion-based indexes for video units and to retrieve(More)