Engineering topics
Publications and source records attributed to Shimada, Katsunori.
Proposed speedometer measures speed of vehicle along ground by comparing signals from two inexpensive sensors focused on surface passing beneath vehicle. Delay between terrain-reflectance signals from two optical sensors indicates speed. Used to measure speeds as low as 10 cm/s.
Correlation performed on relatively small computer. Proposed method for processing video images in slowly changing scenes, renditions of complicated objects truncated to points, lines, polygons, or other simplified geometrical objects. Processed by image-correlating algorithms to extract information: recognize features and to track displacements of features in subsequent image frames to determine velocities. Entails correlation of far fewer data than original images.
Proposed electronic laser scanner sweeps across its field of view without any moving parts, measuring distances to objects between 0.5 and 20 meters away. Immune to wear, stress, and breakage to which mechanical scanners subject. Guides robotic vehicle around obstacles.