Digital Commons Network^™

Application Of Image Principal Component Technique To The Geological Study Of A Structural Basin In Central Spain, Antonio Santisteban, Laura Munoz

LARS Symposia

We describe a method to obtain the principal components of a multispectral image. It allows a simultaneous radiometric enhancement by means of a suitable finer level quantization that does not introduce artifacts. Using this method we are able to produce good photographic prints of the principal components of LANDSAT MSS images. As a matter of fact the two first components (that we call bands A and B) alone contain nearly all the information existing on the original image while the other contain only noise.

We use this technique to help in the geological study of Campo Arañuelo Basin, in Central …

Rectification And Registration Of Digital Images And The Effect Of Cloud Detection, M. L. Nack

LARS Symposia

In previous image registration research, edge image correlation techniques were applied to Landsat-1 multispectral digital image data. Translations of edge images of an earlier area of interest were performed over a search area edge image at a later time to determine the location of the area of interest in the search area. Plots of the correlation surface indicated sharp peaks for successful searches and an accuracy of ±1 pixel or line. The following three new requirements were suggested: (1) because clouds or their shadows are time-dependent image features, removal of cloud or cloud shadow information from the edge images before …

A First Interpretation Of East African Swiddening Via Computer-Assisted Analysis Of 3 Landsat Tapes, Francis P. Conant, Tina K. Cary

LARS Symposia

This paper reports a successful preliminary application of machine processing of LANDSAT data to the identification of swidden farming in East Africa. Analysis of "slash and burn" or shifting cultivation via LANDSAT requires recognition of the characteristics intrinsic to swiddening: by Western standards, field sizes are small, their borders are irregularly shaped and merge with natural features of the terrain; in the area of East Africa with which we are concerned, multiple cropping of as many as 25 cultigens is common, and the small fields in which these crop complexes are grown are interspersed among land at various stages of …

Computer Training Procedures For The Western Washington Forest Productivity Study Utilizing Landsat Data, John R. Edwards

LARS Symposia

The Western Washington Forest Productivity Study was a demonstration and application project utilizing Landsat data and multistage sampling techniques to generate inventory data for all forest lands in Western Washington. This project was conducted to demonstrate the feasibility of using Landsat data in a large scale forest inventory and to determine present and expected future timber supply in Western Washington.

The project was undertaken by the State of Washington, Department of Natural Resources (DNR) in conjunction with the Pacific Northwest Regional Commission, with support from NASA/Ames Research Center, and the USGS EROS Program. ESL Inc. of Sunnyvale, California, was contracted …

On The Transfer Of Remote Sensing Technology To An Operational Data System, Denton J. Tarbet, Timothy T. White

LARS Symposia

The dynamics of transferring remote sensing technology to operational activities of a user agency are explored. The particular evaluation criteria of the Foreign Agricultural Service serve as the motivation for a framework which organizes information to provide a quantitative basis for management decision relative to technique and procedure acceptance for transfer.

Estimation Of Sampling Requirements For Track-Type Remote Sensing Surveys, Paul E. Anuta, Clare D. Mcgillem

LARS Symposia

Many types of remote sensing measurements are made along lines or tracks over the earth's surface which are spaced at distances governed primarily by assumptions about the nature of the phenomena being measured and cost considerations. In geophysical surveys, aircraft-borne magnetic, gravity, gamma ray, electromagnetic and other sensors are flown at low altitude with approximately parallel line spacings ranging from 1/4-mile to several miles. These measurements are commonly sampled and digitized at an arbitrarily high rate along the flight path generating an adequately sampled record with respect to the Nyquist rate which is governed by the bandwidth of the physical …

A Table Look-Up Procedure For Rapidly Mapping Vegetation Cover And Crop Development, Arthur J. Richardson, C. L. Wiegand

LARS Symposia

LANDSAT-1 and -2 multispectral scanner (MSS) data from six overpass dates (April 2, May 17, June 4, July 10, October 17, and December 10, 1975) showed that MSS digital data for bare soil, cloud tops, and cloud shadows followed a highly predictable linear relation (soil background line) for MSS bands 5 and 7 (r2 = 0.974). Increasing vegetation development, documented by leaf area index measurements, for 1973 grain sorghum fields, was associated with displacement of sorghum MSS digital counts away from the soil background line. The LANDSAT data space surrounding the soil background line for MSS5 and MSS7 was divided …

Isursl Levels Classification: A Low Cost Approach To Multispectral Data Analysis, Richard F. Hyde, Samuel N. Goward, Paul W. Mausel

LARS Symposia

The Indiana State University Remote Sensing Laboratory (ISURSL) recognized that the promise of low-cost earth resource evaluation through machine-assisted processing of multispectral (MS) data has not been fully realized. In response to this problem the ISURSL has developed a complete low-cost system of processing MS data which minimizes analysis time for both man and computer while simultaneously maximizing utilization of the data. The basis of the ISURSL classification algorithm, designated LEVELS CLASSIFIER, is identification of numeric boundaries located in multidimensional feature space which differentiate features of interest. Land use classes of interest to an analyst are described by the range …

Tabular Data Base Construction And Analysis From Thematic Classified Landsat Imagery Of Portland, Oregon, Nevin A. Bryant, Anthony J. George, Richard Hegdahl

LARS Symposia

The creation of a land use map of the Portland, Oregon region from LANDSAT has proven to be a useful demonstration that helped substantiate the utility of satellite thematic mapping for regional planning purposes. The tabulation of land use acreage by traffic zones and census tracts, with the application of Image Based Information System (IBIS) software, has permitted a more systematic verification of the LANDSAT classification. Subsequent tabular data base constructions merged socioeconomic and environmental data with the LANDSAT-derived land use statistics. The application of IBIS software to the data bases permitted the cross-tabulation of population statistics and modeling and …

Correlation Of Intensity Variations And False Color Displays Of Multispectral Digital Images, Jorge Burkle, Elias Baron

LARS Symposia

Ground resolution elements seen by a multispectral sensor, may in some cases, consist of mixtures of object categories so that many of the pixels of an image are not characteristic of any category or class. It would be desirable to have a model to represent the combination categories in terms of simpler homogeneous ones and then estimate the corresponding proportions. A method of correlation of intensity variations, may reveal if a given image is representable by a linear mixture model. However, the intensity variation may be due to effects as shadows or variations in the incident light conditions. It is …

Development Of An Instrumentation Program For Studying Behavior Of A Segmental Concrete Box Girder Bridge, R. J. Holman

JTRP Technical Reports

No abstract provided.

Experimental Study Of The Dynamic Response Of Highway Bridges : Interim Report, Peter Karl Kropp

JTRP Technical Reports

No abstract provided.

The Effect Of Pavement Skid Resistance On Wet Pavement Accidents In Indiana, Jonathan Lenard Levy

JTRP Technical Reports

No abstract provided.

Examination Of The Variability Of The Soaked Strength Of A Laboratory Compacted Clay : Interim Report, James C. Scott

JTRP Technical Reports

No abstract provided.

Bridge Vibration Studies : Interim Report, Ali Shahabadi

JTRP Technical Reports

No abstract provided.

Frost Heaving Rate Of Silty Soils As A Function Of Pore Size Distribution : Interim Report, Michael Allen Reed

JTRP Technical Reports

No abstract provided.

Multi-Dimensional Clustering For Data Base Organizations, J. H. Liou, S. B. Yao

Department of Computer Science Technical Reports

No abstract provided.

Analysis Of A Heuristic For Full Trie Minimization, Douglas E. Comer

Department of Computer Science Technical Reports

No abstract provided.

Efficient Recursive Parsing, Christoph M. Hoffmann

Department of Computer Science Technical Reports

No abstract provided.

New Perspectives For Information Systems Education, Thomas I. M. Ho

Department of Computer Science Technical Reports

No abstract provided.

Proving Protection Systems Safe, D. E. Denning, P. J. Denning, S. J. Garland, M. A. Harrison, W.L. Ruzzo

Department of Computer Science Technical Reports

No abstract provided.

Real Time Generation Of Min Distance Strings, Peter J. Denning

Department of Computer Science Technical Reports

No abstract provided.

Linear Queries In Statistical Data Bases, M. D. Swartz, D. E. Denning, P. J. Denning

Department of Computer Science Technical Reports

No abstract provided.

Ellpack--A Cooperative Effort For The Study Of Numerical Methods For Elliptic Partial Differential Equations, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Evaluation Of Numerical Methods For Elliptic Partial Differential Equations, Elias N. Houstis, Robert E. Lynch, T. S. Papatheodorou, J. R. Rice

Department of Computer Science Technical Reports

No abstract provided.

The Terminal Process, Kevin E. Kolis, John B. Lohse, Peter Radtke, Robert Sedlemeyer, Ronald D. Bedford

Department of Computer Science Technical Reports

No abstract provided.

A Collocation Method For Fredholm Integral Equations Of The Second Kind, Elias N. Houstis, T. S. Papatheordorou

Department of Computer Science Technical Reports

No abstract provided.

Predicting The Number Of Bugs Expected In A Program Module, Linda M. Ottenstein, Victor B. Schneider, Maurice H. Halstead

Department of Computer Science Technical Reports

No abstract provided.

Some Data And Observation On Research Publication (A) Numerical Computation, (B) Programming Languages And Systems, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Piecewise Cubic Hermite Interpolation At The Gaussian Points, Elias N. Houstis, T. S. Papatheodorou

Department of Computer Science Technical Reports

No abstract provided.