Showing papers on "Orientation (computer vision) published in 1969"

Perception of interpolated position and orientation by vision and active touch

Abstract: Vision and active touch lead to similar patterns of constant error for the perception of interpolated position in twodimensional and one-dimensional regions, though the errors for touch are larger than those for vision. The error patterns for the orientation of a radius of a semicircle are more complex, but can be interpreted as due to the interaction of two sets of anchors rather than the single pair available for the linear interpolation. The greater size of the touch errors is interpreted as due to a relative overestimation of larger distances by active touch or of smallerdistances by vision.

Systems and apparatus for character recognition

Abstract: System and apparatus for recognizing both handwritten and machine-printed character patterns in which the character filed is scanned by photoelectric means to generate an analog-form signal which is converted into a four-bit binary form and fed to a four-bit parallel shift register from which differently delayed versions are taken to summing circuits in the development of ntuples which operate to detect the presence of short line segments of specific orientation within the character area. By means of further summing circuits the line segment responses are analyzed to identify and indicate the position of a number of different topographical features such as line endings, bends or corners, line junctions and line crossings. These feature responses are converted into a list of code signals for matching, as by computer, with standard lists of similar code signals derived from ranges of different standard characters.

Method and an arrangement for recognizing an object or its position and orientation in space

Abstract: A method and apparatus for determining the positional changes in the surface of an object by recording a real image and speckle pattern produced by focusing the radiation scattered by the object from a coherent source, and by comparing the object with the recorded image and the resulting speckle pattern.

Edge sharpening in a scanned image display system

Abstract: An interlaced raster scan that scans alternately in each of two preselected mutually orthogonal directions, utilizing signal spike forming circuitry responsive to changes in the raster scan video display signal. More nearly equal image edge sharpening is provided for all edges of the display, regardless of the orientation of the image edge.

Some Design Considerations for Digital Position and Velocity Detecting Systems

Abstract: Design-type information is presented for a system that uses pattern recognition principles to sense position and velocity of moving objects. Judging from the literature, little or no work has been done on this type of system. It is believed that these systems have potential industrial and military applications, e.g., an optical object finder that identifies objects in addition to locating them, or a process control sensor to detect grain size and other dimensional properties. One of the most important parts of the system is the receptor. Minimum receptor matrix size as a function of pattern shapes, orientation, position, and velocity is considered and results are presented.

Some implications of planarity for machine perception

Abstract: : The problem of determining the shape and orientation of an object based on one or more two-dimensional images is considered. For a restricted class of projections it is shown that monocular information is often nearly sufficient for complete specification of the object viewed. (Author)