Tohoku University

Yamatake Corporation

Azbil Corporation

Nippon Institute for Biological Science

Atsushi Katsumata

Koji Kobayashi

Hiroshi Nakajima

Takafumi Aoki

Koichi Ito

Susumu Ueda

Takuma Shibahara

Kazuyuki Miyazawa

Makoto Morikawa

Sumio Hoshi

Takeshi Ihara

A plurality of images (I, J) of an object (M) when viewed from different viewpoints are taken in. One of the images is set as a standard image (I), and the other image is set as a reference image (J). One-dimensional pixel data strings with a predetermined width (W) are cut out from the standard image (I) and the reference image (J) along epipolar lines (EP, EP) calculated from a camera parameter (CPR) and the reference point (p). Calculating a phase-only correlation function from the cut one-dimensional pixel data strings will obtain a correlation peak position (Pa). A positional shift amount (d) from the correlation peak position (Pa) is obtained. A search is made for a corresponding point (q) corresponding to the reference point (p) based on this position shift amount (d).

Corresponding point searching method and three-dimensional position measuring method

An iris authentication apparatus includes an iris area extraction unit, registration pattern generating unit, collation pattern generating unit, and collation unit. The iris area extraction unit extracts iris areas from a sensed registration eyeball image and a sensed collation eyeball image. When the iris area extraction unit extracts an iris area from the registration eyeball image, the registration pattern generating unit generates a registration iris pattern image by performing polar coordinate transformation of an image in the extracted iris area. When the iris area extraction unit extracts an iris area from the collation eyeball image, the collation pattern generating unit generates a collation iris pattern image by performing polar coordinate transformation of an image in the extracted iris area. The collation unit collates the registration iris pattern image output from the registration pattern generating unit and the collation iris pattern image output from the collation pattern generating unit on the basis of a correlation therebetween.

Iris authentication apparatus

An arithmetic processing apparatus includes a first data storage unit, two-dimensional arithmetic unit, and main control unit. The first data storage unit stores data to be processed. The two-dimensional arithmetic unit performs two-dimensional operation. The main control unit controls the two-dimensional arithmetic unit. The two-dimensional arithmetic unit includes an input address calculation unit which calculates the addresses of a set of input data necessary for a designated type of operation in the first data storage unit in accordance with an execution start instruction which designates the type of operation and a parameter from the main control unit, and an arithmetic execution unit which performs the designated type of operation for the set of input data which are stored at the calculated addresses in the first data storage unit.

Arithmetic processing apparatus

A plasmid vector having components (D1), (D2), and (D3) enables the efficient integration of foreign DNA into host cells. The components are (D1) an integrase gene, (D2) a segment of DNA forming a region for controlling the expression of the integrase gene, and (D3) a segment of DNA serving as an integrase recognition region when integrase catalyzes the integration reaction.

Plasmid vector comprising a retroviral integrase gene and an integrase recognition region

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Tokyo, Japan

Atsushi Katsumata