HITACHI INFORMATION & COMMUNICATION ENGINEERING, LTD.
|HITACHI INFORMATION & COMMUNICATION ENGINEERING, LTD. Patent applications|
|Patent application number||Title||Published|
|20130270449||DA CONVERSION DEVICE AND ELECTRON BEAM EXPOSURE SYSTEM USING THE SAME - A DA conversion device includes a current output type DA converter, a high-speed operational amplifier operating at a low voltage and configured to generate a voltage corresponding to an output current from the DA converter, and a buffer amplifier connected to an output terminal of the high-speed operational amplifier and operating at a high voltage. The device also includes positive and negative floating power supplies separated from a power supply system and provided as power supplies for driving the DA converter and the high-speed operational amplifier. A midpoint between potentials at the floating power supplies is connected to an output terminal of the buffer amplifier to cause the DA converter and the high-speed operational amplifier to operate mainly based on an output voltage from the buffer amplifier.||10-17-2013|
|20130063581||AUTHENTICATION SYSTEM - It is provided an authentication system, comprising: a reader for obtaining identification information assigned to an identification device held by a subject; an authentication device for authenticating the identification information obtained by the reader; a camera for photographing a facial image of the subject; and a management device which is coupled to a terminal for issuing an alarm and which includes an image database in which the facial image photographed by the camera is accumulated, in which the management device is configured to: search the image database by using information obtained by at least one of the reader and the camera on an occasion of the authentication; determine a reliability of the authentication based on a result of analyzing the retrieved facial image; and transmit data for issuing the alarm to the terminal in a case where it is determined that the reliability is low.||03-14-2013|
|20120274782||Object Recognition Method and Recognition Apparatus - A target fish-eye image for object recognition is split into regions in accordance with the distortion direction. An object recognition portion performs object recognition by using databases prepared in accordance with the regions respectively. The same process is applied to a plurality of target fish-eye images created by rotation of the target fish-eye image. A detected coordinate transformation portion restores the obtained position of an object into the original position by inverse rotation, and outputs a thus obtained result as a detection result. Detection accuracy in object recognition is improved, and the quality of data in databases is reduced. Rotated object images required for database creation are used for creation of databases for object recognition for the fish-eye image. Thus, a distorted fish-eye image for object recognition is directly used without projective conversion or image conversion based on corrective operation to the fish-eye image.||11-01-2012|
|20120106866||METHOD AND DEVICE FOR CORRECTING IMAGE, AND METHOD AND DEVICE FOR GENERATING CORRECTION TABLE FOR USE IN CORRECTION OF IMAGE - An image correction device geometrically corrects an input image, based on the correction table, which is generated by obtaining a light-direction vector in an objective space corresponding to each pixel position on a corrected image, based on a first projection center located on the rear side of a second projection center as the projection center of the input image in the objective space with respect to the direction of an optical axis corresponding to the input image, obtaining from the light-direction vector an origin-based light-direction vector indicating a direction from the second projection center in which a point corresponding to each pixel position exists in the objective space, exacting a position on the input image corresponding to the origin-based light-direction vector, and recording in the correction table the resampling position in correspondence with each pixel position in the corrected image.||05-03-2012|
Patent applications by HITACHI INFORMATION & COMMUNICATION ENGINEERING, LTD.