Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 5262835 | Method and apparatus for making stereophotographic documenatation and photogrammetric measurement of impressions or models or jaws A method of making stereophotographic documentation and photogrammetric of impressions or of models of jaws, in which the impression or the model of a jaw is placed on a reference object, which in its turn is placed on a bottom plate in a photo device. Th... | 11/16/1993 |
| 5251156 | Method and apparatus for non-contact measurement of object surfaces Pictures of an object to be measured are taken from several different positions or aspects by a video camera which is mounted via a two-axis articulating head to the measurement arm of a coordinate-measuring machine. The pictures taken from the different ... | 10/05/1993 |
| 5249035 | Method of measuring three dimensional shape To eliminate complicated adjustment of the mutual positional relationships between cameras and an object to be measured in the method of measuring a three dimensional shape of an object, images of an object to be measured are taken from different directio... | 09/28/1993 |
| 5144373 | Detection of range discontinuities in stereoscopic imagery Range discontinuities (44) in an imaged scene are located with superior accuracy by using a pair of stereoscopically related images (10, 12) of the scene to sense edges in the scene, and to determine the range of correlatable image pixels; segmenting the ... | 09/01/1992 |
| 5104216 | Process for determining the position and the geometry of workpiece surfaces In the determination of the position and geometry of workpiece surfaces, especially weld grooves in automatic arc welding, the workpiece surface or a section thereof, is imaged from two different observation points onto two image pickups. This is so that ... | 04/14/1992 |
| 4993836 | Method and apparatus for measuring form of three-dimensional objects A method and apparatus for measuring the cross-sectional or three-dimensional form of an object using video cameras. The object or the camera means is moved to provide a partial overlap on the measurement object, and local form segments of the object are ... | 02/19/1991 |
| 4982438 | Apparatus and method for recognizing three-dimensional shape of object A three-dimensional shape of an object is recognized by developing enveloping surfaces of the object by a cone-silhouetting method, wherein the object is picked up by a binocular three-dimensional vision method by making use of geometrical restraint condi... | 01/01/1991 |
| 4924506 | Method for directly measuring area and volume using binocular stereo vision A method for directly measuring the area of a topological surface with an arbitrary boundary shape lying in a fixed elevation different from a fixed surrounding surface elevation relies upon binocular stereo vision. Three stereo correlation measurements a... | 05/08/1990 |
| 4858157 | Apparatus and method for determining the coordinates of a three-dimensional object A coordinates measuring apparatus comprising a detecting unit constituted by an optical system for obtaining an image of an object and a detecting system having a plurality of arrayed detecting elements disposed in such a manner that respective detecting ... | 08/15/1989 |
| 4834530 | Shape measuring apparatus A shape measuring apparatus is disclosed. It comprises a pattern portion having a pattern in which pattern elements are arranged in the pitch width direction according to a predetermined rule so that a plurality of N codes can be distinguished with respec... | 05/30/1989 |
| 4803645 | Method and apparatus for measuring coordinates A coordinates measuring method in which the image information of the same point are derived as first, second and third information when viewed from at least three different directions, a first corresponding point is determined by deriving the correlation ... | 02/07/1989 |
| 4755047 | Photometric stereoscopic shape measuring method Method of determining stereoscopic geometry of an object through photometric stereoscopic measurement with high accuracy. Three or more images of the object picked up in a same fixed direction by varying the state of light sources are derived. Relationshi... | 07/05/1988 |
| 4747574 | Apparatus for acquisition of the surface shape of a distant object by means of picture element scanning In the disclosed device, a lens arrangement focuses light upon a detecting sensor arrangement as a vehicle passes over an object, such as the ground, whose surface is to be determined. An optical device slews the path of light to the lens arrangement from... | 05/31/1988 |
| 4708472 | Stereophotogrammetric surveying and evaluation method A stereophotogrammetric surveying and evaluation method is presented. A camera is carried over the terrain of interest, the camera having three sensor lines arranged transversely or obliquely to the line of flight. From the resulting three overlapping lin... | 11/24/1987 |
| 4695156 | Range finding method and apparatus A range finding apparatus includes a pair of spaced apart cameras which provide signals that are digitalized, stored in frame buffers, and provided to a computer that provides a range map of a target object viewed by the cameras. The computer optimizes a ... | 09/22/1987 |
| 4504914 | Photogrammetric device for aircraft and spacecraft for producing a digital terrain representation A sensor device of the type to be carried on aircraft or spacecraft which avel along an arbitrary flight path, operates to provide data corresponding to the course and orientation of the craft, and a digital display of the terrain over which the craft is ... | 03/12/1985 |
| 4313678 | Automated satellite mapping system (MAPSAT) A system for automatically mapping the surface of a celestial body is presented. A satellite in a near polar sun-synchronous orbit about the body includes two or three linear sensing photo-detector arrays mounted transversely to the satellite heading. Wit... | 02/02/1982 |
| 4099880 | Method and an apparatus for stereoscopic measurement utilizing a three-dimensional image A method and apparatus for stereoscopic measurement of an actual value of depth in a subject through its three-dimensional image obtained from two stereoscopically photographed films by utilizing three factors, that is, the center of optical axis of an X-... | 07/11/1978 |
