Showing papers on "Orientation (computer vision) published in 1972"

Recent Statistical Methods for Orientation Data

Abstract: The application of statistical methods for determining the areas of animal orientation and navigation are discussed. The method employed is limited to the two-dimensional case. Various tests for determining the validity of the statistical analysis are presented. Mathematical models are included to support the theoretical considerations and tables of data are developed to show the value of information obtained by statistical analysis.

Automatic non-contact recognition of coded insignia

Abstract: A system is provided for optically scanning a remotely located encoded label on a package, error detecting, verifying and decoding the same, regardless of the orientation of said package.

Optical analysis of two‐dimensional patterns

Abstract: The Fourier transform of an image can be measured or filtered to provide information concerning the distribution and orientation of features in that image. Illustrative examples of the technique are drawn from geomorphology, planning, and remote sensing. The first application concentrates on the analysis of fault systems, sediment textures, and drainage patterns. A rural area illustrates partial solution of an amenity planning problem by optical methods. A significant application of transform analysis to field work is the measurement and recording of data on photographs.

Compact imaging apparatus and projection display device

Abstract: A compact imaging apparatus and rear projection display device are described wherein an image of an object is focused on an image area which is displaced and rotated from the object plane. A pair of planar mirrors of predetermined shape are selectively located to fold the image beam from an image device and provide an image of desired orientation on the image area. A compact camera for producing a large image area in a small volume is described and is particularly useful in connection with so-called instantly developed photographic films. A rear projection device is described, having an optical arrangement which confers a high degree of immunity to ambient light. An image beam is projected upwardly against a first mirror, reflected toward a second mirror behind a projection screen, and then reflected forwardly to the projection screen. The display is highly immune to ambient light, since the general path of the image projection beam is always upward, whereas the general path of virtually all ambient light is downward. The use of two mirrors to fold the image beam in this manner introduces an unusual rotation of the projected image which, however, is taken into account in the design of the optical system. For the sake of ruggedness and precision, as well as economy of construction, the cabinet of a microform display device employing the described optical system is formed from a unitary block of polystyrene foam, the interior walls of which are faceted in an appropriate manner to provide mounting surfaces for the two mirrors. The same optical principle is applied also to the design of a combined electronic and optical display device enclosed within a CRT envelope, which is suitable for producing either an ephemeral read-out or hard copy.

Use of the Symap Computer Mapping Program

Abstract: The SYMAP program for producing line-printed maps on the computer is considered with respect to problems the new user is likely to have. Two groups of electives or options in the F-MAP package are discussed in detail: those that control map size and orientation and those that permit manipulation of the interpolation algorithm. Some classroom examples are suggested that emphasize the heuristic nature of the SYMAP program.

Storage and reconstitution of microphotographic images

Abstract: A process for the microscopy of transparent objects, in which the object is placed in a conventional photographic microscope with a diffraction grating system of predetermined spacing disposed in front of the photosensitive layer in which the photographic image is formed. Several images of the object are formed in the one photograph, each corresponding to a given focal plane and a given azimuthal orientation of the grating system with reference to the object. To reconstitute the multiple images recorded in the single photograph, the photograph is illuminated by means of a light source with a small, non-zero numerical aperture and a predetermined spectrum, and an afocal optical system providing at its image focus a real image of the photograph, with appropriate magnification. The beams diffracted by the photograph are selectively masked and the decoded images projected onto a suitable surface, for observation or analysis. The process finds application in three-dimensional microphotography.

Numerical reanalysis through proportional differences

Abstract: A new approach to numerical analysis is presented. Instead of providing conventional data one essentially prescribes the desired pattern and the analysis is performed through proportional differences. If satellite or other data indicate a synoptic system in a numerical analysis should be reanalyzed, a threedimensional manual analysis is performed. Particular attention is given to the adjustment of the location and orientation of the synoptic pattern. No changes are permitted on the borders of the finite area containing the