Yoshifumi Kitayama

Fundamental study on eye function unit for biped-walking robot

We developed the CCD camera unit for a bipedal robot, which consists of a CCD camera and two mirrors. The CCD camera unit has the function of two human eyes. We conducted the distance measurement using the CCD camera unit, and its effectiveness was confirmed.

3-D shape measurement technique for pulverized particle

Images of a simple cubic model with its size bigger than a pulverized particle were acquired from two different directions using a microscopic camera. Each coordinate of the characteristic points on the model was precisely obtained to verify its 3D shape by our image processing technique. Application of the technique to the pulverized particle confirmed the possibility to define its 3D shape.

A study on particle size distribution measuring method for floating particles in the upward air flow with its velocity equal to their terminal velocity

We have examined the particle size measuring method in which flour particles are floated into the airflow at a test section with its upward velocity equal to their terminal velocity. As a result, it was verified that the terminal velocity was experimentally related to the size of floating particle, and that it made possible to obtain spherically equivalent diameter of the floating particle by an elliptical approximation of the image. We further applied this floating method to measure particle size distribution as a simpler way in which the floating particles were counted in number according to the various upward velocities.