Kabushiki Kaisha Topcon

Topcon Corporation

Other

The Japan Steel Works, Ltd.

Kazuo Kitamura

Nobuo Kochi

Hitoshi Otani

Takahiro Watanabe

Tadayuki Ito

Yoshimasa Ogawa

Yasuo Suzuki

Kenichi Watanabe

Tsutomu Kikawa

Eiichi Yanagi

Masashi Kato

Shinichi Okimoto

Nicola D'Apuzzo

Tsutomu Kigawa

Tadashi Uno

An ophthalmologic apparatus includes a measurement optical system to acquire information of an eye, an image obtaining part to obtain an anterior ocular segment image of the eye on an optical axis of the measurement optical system, a display to display the anterior ocular segment image, cameras to each capture an image of an anterior ocular segment of the eye from a different direction, a driving mechanism to move the measurement optical system in a vertical direction and a horizontal direction, and a controller. The controller is configured to acquire three-dimensional position information of the eye based on the images captured by the cameras and calculate moving amounts in the vertical and horizontal directions of the measurement optical system based on the three-dimensional position information. The controller is configured to display the anterior ocular segment image on the display while positioning the measurement optical system with the driving mechanism.

Ophthalmologic apparatus and measurement method of eye

A processing for specifying a correspondence relationship of feature points between two sets of optical data can be highly precise and efficiently carried out. The correspondence relationship of the perpendicular edges is obtained based on the assumption that the object is a building, in the processing for integrating the three-dimensional model obtained from the point cloud position data and the three-dimensional model obtained from the stereophotographic image. In this case, one perpendicular edge is defined by the relative position relationship with the other perpendicular edge, and the correspondence relationship is high-precisely and rapidly searched.

Optical data processing device, optical data processing system, optical data processing method, and optical data processing program

The device includes a unit obtaining an object's point cloud position data, a unit obtaining the object's image data, a unit in which co-relationship between point cloud position data obtained in the point cloud position data obtaining unit through a primary viewpoint or image data obtained in the image data obtaining unit through the primary viewpoint and image data obtained in the image data obtaining unit through a secondary (different from the primary) viewpoint are identified, a unit forming a three-dimensional model by the data obtained in the point cloud position data obtaining unit, and a unit controlling displaying of the model formed in the model forming unit on a displaying device. The model forming unit forms a three-dimensional model having direction seen from the secondary viewpoint, depending on the co-relationship identified in the co-relationship identifying unit. Operators see the model seen from the secondary viewpoint as an image.

Point cloud position data processing device, point cloud position data processing system, point cloud position data processing method, and point cloud position data processing program

A point cloud data processing device extracts features of an object from point cloud data thereof and automatically generates a three-dimensional model in a short time. The device includes a non-plane removing unit for removing points of non-plane areas from the point cloud data, and a plane labeling unit for adding identical labels to points in the same planes other than the points that are removed by the non-plane removing unit so as to segment the point cloud data into planes. The device also includes a three-dimensional edge extracting unit for extracting three-dimensional edges based on at least one of lines of intersections of the segmented planes and convex lines that convexly cover the segmented planes. The device further includes a two-dimensional edge extracting unit for extracting two-dimensional edges from within the segmented planes, and an edge integrating unit for integrating the three-dimensional edges and the two-dimensional edges.

Device for generating a three-dimensional model based on point cloud data

A technique is provided for efficiently process three-dimensional point cloud position data that are obtained at different viewpoints. A projecting plane is set in a measurement space as a parameter for characterizing a target plane contained in plural planes that form an object. The target plane and other planes are projected on the projecting plane. Then, a distance between each plane and the projecting plane is calculated at each grid point on the projecting plane, and the calculated matrix data is used as a range image that characterizes the target plane. The range image is also formed with respect to the other planes and with respect to planes that are viewed from another viewpoint. The range images of the two viewpoints are compared, and a pair of the planes having the smallest difference between the range images thereof is identified as matching planes between the two viewpoints.

Three-dimensional point cloud position data processing device, three-dimensional point cloud position data processing system, and three-dimensional point cloud position data processing method and program

An edge extraction device can reduce detected noise other than a contour of an article, and can improve the operability. The edge extraction device includes: an edge detection section which calculates edge strength from an image and detects an edge; a labeling processing section which performs labeling processing on the edge detected by the edge detection section and calculates a length of the edge; an edge enhancement processing section which performs edge enhancement processing by using a value corresponding to the length of the edge, which is calculated by the labeling processing section, and the edge strength, which is calculated by the edge detection; and an edge extraction section which performs binarization processing on a value of the image, which is enhanced by the edge enhancement processing section, by using an adjustable threshold value, and extracts a predetermined edge.

Edge extraction apparatus, surveying equipment, and program

A jig mounting apparatus has a detection optical system that detects reference marker of an eyeglass lens, is configured so as to determine an mounting point based on the reference marker detected by the detection optical system and position the mounting center of jig, which is used in processing the eyeglass lens, on the mounting point to mount the jig on the surface of the eyeglass lens, in which the detection optical system includes: a focusing optical system that focuses a light-emitting optical flux from a light source on the surface of the eyeglass lens, where hidden marks are formed, via an aperture stop; a reflection plate that reflects an optical flux focused by the focusing optical system and passed through the eyeglass lens; and an imaging device that is provided on a position optically approximately conjugate with the aperture stop and configured to focus on a space portion along an optical axis direction from the surface of the eyeglass lens.

Jig mounting apparatus

An automatic suction device for an eyeglass lens and a method for determining suction jig installation position, capable of recognizing that a frame exchange lens holder is being installed on a placement table, making transition to installation work of a frame exchange mode, and avoiding an erroneous contact between the frame exchange frame and a lens holding frame. The kind of holding means placed on the placement table is determined from an image of the inside of an opening (), which image is taken by a CCD camera (), and the installation position of a suction jig () at an eyeglass lens (L) placed on a frame exchange lens holder () is obtained.

Device for installing suction jig for eyeglass lens and method for determining suction jig installation position

In a method and an apparatus for manufacturing chips for a thixomolding-process injection molding machine, primary crushed pieces obtained by fragmenting and crushing metal alloy wastes are cut and fragmented by a chip manufacturing apparatus having fixed blades, rotating blades, and a screen so as to obtain chips, with the result that the surfaces are polished, and a powder is eliminated by forced exhaust air, thereby making it possible to manufacture the chips while preventing ignition and explosion.

Method and apparatus for manufacturing chips for a thixomolding-process injection molding machine

A metallic feed initially in a solid state is fed into a cylinder barrel of an injection molding machine. The metallic feed is melted by applying heat to the metallic feed from outside the cylinder barrel and by heat produced from frictional and shearing forces generated by rotation of a screw housed within the cylinder barrel. The cylinder barrel and screw define at least a feed zone, a compression zone and an accumulating zone. After melting and passing through each of the three zones, the metallic feed is injected into a die, to thereby form a shaped part. The temperature of the metallic feed is controlled to be above the liquidus of the metallic feed during the injecting process.

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Tokyo, Japan

Kazuo Kitamura