T. Yamasaki

Learn More
A novel method for online data acquisition of cursive handwriting is described. A video camera is used to record the handwriting of a user. From the acquired sequence of images, the movement of the tip of the pen is reconstructed. A prototype of the system has been implemented and tested. In one series of tests, the performance of the system was visually(More)
This paper addresses the problem of determining a person's body and head orientations while tracking the person in an indoor environment monitored by a single top-view camera. The challenging part of this problem lies in the wide range of human postures depending on the position of the camera and articulations of the pose. In this work, a two-level cascaded(More)
The paper proposes a network routing method based on a computational ecology model. The computational ecology model is a mathematical model proposed by B.A. Huberman and T. Hogg (1988), which represents a macro action of multi-agent systems. We formulate routing on a computer network as a resource allocation problem, where packets and links are regarded as(More)
We present methodology ~HBFF/SVD! for optimizing the form and parameters of force fields ~FF! for molecular dynamics simulations through utilizing information about properties such as the geometry, Hessian, polarizability, stress ~crystals!, and elastic constants ~crystals!. This method is based on singular value decomposition ~SVD! of the Jacobian(More)
In order to obtain a low computational cost method (or rough classification) for automatic handwritten character recognition, the paper proposes a combined system of two feature representation methods based on a vector field: an autocorrelation matrix; a low frequency Fourier expansion. In each method, the similarity is defined as a weighted sum of the(More)
We apply correlation analysis of chemical bonds (CACB) to simple organic reaction paths. CACB, an operatorbased formalism for analyzing the electronic structure for molecule, clarifies how bond exchange processes relate to changes in covalent bond orders and bond interaction coefficients. For single bond-exchange processes, the bonds correlation typically(More)
We have been developing impression prediction techniques for oral presentations. The contribution of this paper is two folds. First, we introduce soft code assignment for the bag-of-features (BoF) representation to improve the prediction accuracy. Second, we discuss towards online impression prediction aiming at real-time feedback to the speaker.(More)