Automation in Surveying and Mapping: Present and Future
Patterns of present-day automation in photogrammetry are examined in seven broad categories: stereoplotter-computer interface; automatic image correlation; offline orthophoto systems;...

Linearized Collinearity Equations for Scanned Data
The collinearity equations, based upon modification of those common in conventional photogrammetry, must accommodate the continuous dynamic nature of the exterior orientation elements....

Brock & Weymouth Photogrammetric Mapping Equipment
The Brock and Weymouth Mapping Instruments which were designed and built in Philadelphia in the early 1920's were a unique development. The Brock Process started a new era...

Image Error and Photogrammetric Requirements
A major factor limiting photogrammetric accuracy is the effect of residual errors that displace the photographic image from its ideal (projective) position. Sources of image error and...

Engineering Surveying: Chapters 2, 5, 6, 8, 16, and 20
Selected chapters of a Manual on Engineering Surveying is being published for review by members of the ASCE and by readers of the Journal. The included chapters cover problems of coordinate...

Control Densification by Analytic Photogrammetry
Numerical methods in photogrammetry began to receive wide-spread attention in the early fifties with the development of the large digital computers. The Worldwide Satellite Triangulation...

New Adjustment of North American Datum and Surveyor
A new adjustment of the horizontal geodetic control (triangulation) of the North American continent has begun which will probably include Greenland, Canada, the United States, Mexico,...

Corner Restoration in Missouri
The Office of the State Land Surveyor in Missouri is actively engaged in a program of remonumenting the section and quarter section corners in the State of Missouri. One phase of this...

Recycling Older Buildings Preserves History, Saves Money
The Alameda County Traffic Reporting and Inventory System (ACTRIS) has utilized a unique combination of diverse disciplines to produce an inventory of traffic control devices. With the...

Aerotriangulation Precision Attainable for Highway Photogrammetry
The magnitude of the standard error, 0.00012 times flight height for large-scale photography was empirically determined by analyzing data from 137 stereo models in 22 flights at heights...

Analysis and Prediction of Photogrammetric Residual Errors
A mathematical model for the photogrammetric systematic residual errors has been formulated and its solution tested using the single photo resection residuals on observations. The predicted...

Photogrammetric Control Extension for Route Design
It is of utmost importance to select such a method and instrument for aerial triangulation which provides the required accuracy in a most economical way. Nine strips of wide and super-wide...

New Procedure for Numerical Relative Orientation
A random rotation approach has been suggested herein to tackle the problems of relative and exterior orientations. This new method circumvents the problem posed with iterative solutions....

The Environment and a Two-Billion Dollar Property
Land management must consider the environment in depth, in cooperation with the public, to ensure maximum benefit to man and nature. Surface and subsurface ownership must be known. Ownership...

Photogrammetry Aids Solution of Environment Problems
Photogrammetrists are engaged in the recognition, location, and description of environmental problems and the surveillance of completed environmental projects. Various types of aerial...

Theoretical Weighting of Photogrammetric Equations
The fundamental resection formulas of photogrammetry suggest a weighting scheme based on the standard deviations of the ratios of image coordinates to focal length. These ratios are functions...

Photogrammetry and Hydraulic Surfaces
The exact determination of hydraulic surfaces presents a serious problem for experimental hydraulic researchers. Unlike mechanical or electronic devices, which require physical contact...

Computer Program System for Aerotriangulation
A system of FORTRAN programs has been developed to meet the varied needs of analytical aerotriangulation. The basic solution is based on a simultaneous adjustment of all photogrammetric...

Regional Control Supplied by Photogrammetry
Where second-order geodetic control has a spacing of 3 miles to 5 miles, the positions and elevations of a virtually unlimited number of premarked ground points within a control figure...

Absolute Orientation of Photogrammetric Model
An iterative approach by linearized equations is employed to tackle the problem of absolute orientation. As the space model is similar to the photographed object, the scale determination...

 

 

 

 

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