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...

Channel Rectification Engineering Survey Program
Accurate surveys and adequate maps are essential for planning, design, and construction of channel rectification and other works for a major river project; to insure the complete project...

Aerial Color Analysis of Water Quality
A new technique utilizing color photography in aerial water analysis is described. The technique termed the scene color standard (SCS) technique, uses natural objects in the photographic...

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...

Explicit Approach to Exterior Orientation
Until recently, exterior orientation methods, which have made their debut in photogrammetric literature, have been developed by treating the problem as a nonlinear one. Therefore, iterative...

Aerial Photography for Water Resources Studies
The fundamentals of color and color-infrared photography are reviewed. Illustrations are presented to show the use of color and color-infrared aerial photography to study siltation and...

Bridge Engineer Looks at Esthetics of Structures
It should be mandatory that bridge engineers consider esthetics since there is so much emphasis being placed upon the effect of construction on the environment. Factors to be considered...

Remote Photographic Acqisition of Data
Meteorological instruments are often remotely located where frequent visits by technicians to obtain readings are impractical. In such cases, an economical device to record data automatically...

Apollo 11: Soil Mechanics Results
Data were extracted from astronaut observations, television coverage of the moon walk, and returned photographs and samples. It has been determined that the upper few centimeters of the...

Coastal Erosion in North Carolina
Aerial photography and wave refraction procedures were used to study coastal erosion along the entire 330 miles of the North Carolina coast. The aerial photography method made use of...

Modern Day Surveys for Highway Location and Design
Spin-offs of space technology and defense oriented research projects present the highway engineer with adequate means of surveying to demand requirements. Descriptions are presented for...

Applications of Airborne Remote Sensing Technology
Aerial photography has been used for nearly a century. Recent developments in aerial photography, such as color film, color infrared film, and multiband photographic systems, have greatly...

Reconnaissance for Dam Sites in Remote Areas
River reconnaissance studies generally separate into three stages: literature search, interviews with knowledgeable people, and field investigations. The reconnaissance engineer should...

Optimization of Sub-Systems with Timelapse Photography

Economic Location of Locks
Engineers and economic planners must locate navigation locks on new waterway improvements or when relocating locks on existing waterways in such a manner as to decrease operating costs...

Airphoto Interpretation of Flood Plain Soils
Urban planners and developers are giving increasing emphasis to the problems of land use on flood plains. In order to plan effectively for land use on flood plains, both the distribution...

Photogrammetric Mapping of Craters from Small Explosions
The possible future use of nuclear explosives for large-scale excavation projects has led to small-scale investigation of cratering and ejecta mechanisms using chemical explosive charges....

Photogrammetric Measurement of Structural Movements
Photogrammetric measurements of displacements of architectural and engineering structures require relative measurements between pairs of plates photographed at different times with the...

Determination of Perspective Generating Parameters
A photogrammetric method for the determination of the generating parameters of a photograph is presented. The generating parameters are defined as six independent coordinates from which...

Close-Racing Photogrammetric Data Reduction Scheme
The described data reduction scheme evolved in the course of research work on the development of data acquisition systems for strain and deflection measurements of structural models under...

 

 

 

 

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