Digital Commons Network^™

Complete Lineament Extraction With The Aid Of Shadow-Free Landsat Image, Kiyonari Fukue, Haruhisa Shimoda, Toshibumi Sakata

LARS Symposia

LANDSAT images are most useful for geological lineament extraction, especially for large-scale lineaments. However, because of the nature of the LANDSAT orbit, there are almost no lineaments in the same direction as the sun angle. In this report, a new technique which can generate virtual LANDSAT images with any sun directions is described.

In order to eliminate shadows from the original LANDSAT image, a shadow-free land cover classification was first applied. Shadow areas were classified into four categories using spectral features. Pixel values in each categories of the original image were scaled to the values of corresponding categories in no-shadow …

Registration Of Digital Imageries Using Optimization Technique, A. D. Kulkarni, B. L. Deekshatulu, K. R. Rao

LARS Symposia

Registration is an important aspect of any image processing system. Registration may be interpreted as automatic determination of local similarity between two structured data sets. Several digital techniques have been used for registration. Principal among these are cross-correlation, normalized cross-correlation and minimum distance criteria. Fast algorithms like sequential similarity detection for translational differences have been developed. In all the above methods, a portion of one image is taken as reference and similar portion in the other image is located by carrying out a search over the other image. There may be translational, rotational and scale differences between the two imageries. …

Pintails And Pixels: A Potential Application Of Landsat Technology To Waterfowl Habitat Inventory, T. G. Neraasen, A. J. Macaulay, R. P. Mroczynski

LARS Symposia

An integrated resource inventory program involving Ducks Unlimited (Canada), Purdue University (LARS), Interdisciplinary Systems Limited (Canada) and the Canada Centre for Remote Sensing is described. The objective is to test the feasibility and operational capability of applying over a wide area, Landsat data classification techniques in order to identify, map and measure the areal extent and relative quality of waterfowl breeding habitat, primarily in the Prairie Pothole Region of Canada.

Ducks Unlimited (Canada) is a private, nonprofit conservation organization dedicated to preservation of wetlands in Canada. The Prairie Pothole Region of the southern prairie provinces is the focus of our …

A New Approach To Automatic Identification Of Ground Objects Via The Reflectance Look-Up Tables, Y. Kawata, T. Kusaka, Y. Haba, S. Ueno

LARS Symposia

In the present study we describe a method to estimate the optical thickness of the atmospheric haze. A true surface reflectance data set is obtained from a LANDSAT data set by using the Atmospheric Effect Correction System developed at Kanazawa Institute of Technology. A data base of classes of land covers containing the statistical information on the spectral reflectance is constructed from true surface reflectance data sets. Finally a new and powerful table look-up approach in classification is described and the results are presented.

Techniques To Update A Land Management Information System With Landsat, C. A. Nelson, D. E. Meisner, B. Smekofski

LARS Symposia

The Minnesota State Planning Agency has developed a geographically referenced Land Management Information System which is being used extensively for planning purposes. Land use categories in the system were originally coded from aerial photographs; this method is inefficient for updating the large-area data base. Landsat data and many computer-assisted techniques are available to analyze the classification system and to update the land use data base. The data derived from a Landsat analysis could be used to supplement the existing data base and to complement detailed interpretations of aerial photographs.

This study had as its primary objective an evaluation of computer …

Mechanics Of Monitoring Forest Clearcuts And Their Regeneration, M. S. Gregory, S. J. Walsh, Jan Vitek

LARS Symposia

A framework for the identification and monitoring of forest clearcuts and their regeneration is presented. LANDSAT digital data are classified to detect clearcuts and their major regeneration components, including brush, grass, bare soil, and conifer. Historical LANDSAT digital data are used to provide a change detection analysis of forest conditions. Area summaries of land cover are obtained for the entire study area or for subunits. A graphic digitizer is used to provide an overlay to the LANDSAT, digital land cover classification in order to summarize land cover area by physical and/or political boundaries. Individual clearcuts are analyzed within each summary …

Broad Area Forest Fuels And Topography Mapping Using Digital Landsat And Terrain Data, Mark B. Shasby, Robert R. Burgan, Gregg R. Johnson

LARS Symposia

A spatially registered digital data base of fuels and terrain information was generated for a test site on the Lolo National Forest in Montana. The data base was developed specifically for providing spatially relevant data to a mathematical fire behavior model developed by the Forest Service which integrates this information along with current weather data to produce realistic estimates of probable fire behavior.

Methodologies for the processing and analysis of Landsat MSS and digital terrain data for the mapping of U.S. Forest Service fuel types were developed and demonstrated. Key elements in the mapping process were the development of a …

Use Of Landsat-2 Data Technique To Estimate Silverleaf Sunflower Infestation, A. J. Richardson, D. E. Escobar, H. W. Gausman, J. H. Everitt

LARS Symposia

We conducted this study to test the feasibility of the technique using the Earth Resources Technology Satellite (LANDSAT-2) multispectral scanner (MSS) data, collected on June 2, 1977, to distinguish silverleaf sunflowers (Helianthus argophyllus Torr. and Gray) from other plant species and for estimating the hectarage percent of its infestation. Sunflowers gave high mean digital counts in all four LANDSAT MSS bands that were manifested as a "pinkish" image response on the LANDSAT color composite imagery. Photo- and LANDSAT-estimated hectare percentages for silverleaf sunflower within a 23,467-ha study area were 9.1 and 9.5%, respectively. The geographic occurrence of sunflower areas on …

Retrieval Of Coastal Water Information From Landsat Mss Data, Sueo Ueno

LARS Symposia

In recent years an inverse problem of determining optical parameters of air-water system from the remotely sensed spectral radiance of water has deserved much attention in the field of environmental monitoring. Particularly, optimization approach to the inference of optical properties of subsurface water from the measurements of multispectral scanner data of the sea has been developed analytically and computationally.

In the present paper, making use of the invariant embedding, an initial-value solution of the transfer equation in air-water system with allowance for the interaction of radiation at the system interface is provided. The Cauchy system of the scattering function under …

Canopy Reflectance As Influenced By Solar Illumination Angle, J. C. Kollenkark, V. C. Vanderbilt, C. S. T. Daughtry, M. E. Bauer

LARS Technical Reports

An experiment was conducted at West Lafayette, Indiana in 1979 to quantitatively describe the interaction of the solar illumination angle and row azimuth angle on the measured reflectance factor (RF) of soybean canopies consisting of 11 plots. Nine of the plots were planted in 71 cm wide rows; the other plots were of bare soil and soybeans with 100 percent soil cover. Reflectance factor data in four spectral bands, 0.5-0.6, 0.6-0.7, 0.7-0.8, and 0.8-1.1 pm, were taken at 15 minute intervals during three clear days, August 12 and 31 and September 19 over nine plots of differing azimuthal direction with …

Waveband Evaluation Of Proposed Thematic Mapper In Forest Cover Classification, Richard S. Latty, Roger M. Hoffer

LARS Technical Reports

This study involved the evaluation of the characteristics of multispectral scanner data relative to forest cover type mapping, using NASA's NS-001 multispectral scanner to simulate the proposed Thematic Mapper (TM). The objectives were to determine: (1) the optimum number of wavebands to utilize in computer classifications of TM data; (2) which channel combinations provide the highest expected classification accuracy; and (3) the relative merit of each channel in the context of the cover classes examined. Transformed divergence was used as a measure of statistical distance between spectral class densities associated with each of twelve cover classes. The maximum overall mean …

Some Results On Perfect, Static-Key Hashing, Eric Dittert, Michael J. O'Donnell

Department of Computer Science Technical Reports

No abstract provided.

The Configurable, Highly Parallel (Chip) Approach For Signal Processing Applications, Lawrence Snyder

Department of Computer Science Technical Reports

No abstract provided.

The Response Times Of Priority Classes Under Preemptive Resume In M/G/M Queues, A. B. Bondi, J. P. Buzen

Department of Computer Science Technical Reports

No abstract provided.

Wafer Scale Integration Of Parallel Processors, Kye Sherrick Hedlund

Department of Computer Science Technical Reports

No abstract provided.

History And Overview Of Csnet, Peter J. Denning, Anthony Hearn, C. William Kern

Department of Computer Science Technical Reports

No abstract provided.

The Aggregate Server Method For Analyzing Serialization Delays In Computer Systems, Subhash C. Agrawal, Jeffrey P. Buzen

Department of Computer Science Technical Reports

No abstract provided.

Operational Analysis Of Queues With General Service Times, Jeffrey A. Brumfield, Peter J. Denning

Department of Computer Science Technical Reports

No abstract provided.

Software Science Revisited: A Critical Analysis Of The Theory And Its Empirical Support, V. Y. Shen, S. D. Conte, Herbert E. Dunsmore

Department of Computer Science Technical Reports

No abstract provided.

Restruct: A Specification-Driven File Transformation Tool, James D. Arthur, Douglas E. Comer

Department of Computer Science Technical Reports

No abstract provided.

Improving Virtual Memory Performance By Off-Line Page Clustering, Jehan-Francois Paris

Department of Computer Science Technical Reports

No abstract provided.

Arizona Geophysical Data Base, Ronald G. Mcleod

LARS Symposia

A series of digital data sets were compiled for input into a geophysical data base for a one degree quadrangle in Arizona. Using a Landsat digital mosaic as a base, information on topography, geology, gravity as well as Seasat radar imagery were registered. Example overlays and tabulations are performed.

Inventory Of Semi-Arid Rangelands In South Texas With Landsat Data, J. H. Everitt, A. J. Richardson, C. L. Wiegand

LARS Symposia

A 39,000-ha semi-arid rangeland test site in Starr and Zapata Counties, Texas, was used to compare rangeland inventory and other landuse categories estimated by digital pattern recognition methods (maximum likelihood ratio classification) with percentages estimated from a ground-correlated print enlarged to 1:100,000 scale from a LANDSAT color composite transparency. Five land-use categories were identified (grassland, mixed brush rangeland, saline rangeland, cropland, and water). We found a highly significant correlation (r = 0.997**) between the photo- and computer-estimated hectarage for the June LANDSAT-2 overpass. The correlation was not significant for the August overpass largely because a large percentage of the most …

Comprehensive Geo-Data Base Control With An Electronic Coordinate Digitizer, Thomas D. Frank

LARS Symposia

A need for geo-referenced data within the scientific community has led to the development of comprehensive geographic information systems. Such comprehensive systems are characterized by three fundamental attributes. They possess a data organization which is indexed by using a geographic locator. They have the capability to manipulate and analyze the data base by displaying raw data, to aggregate raw data into classes, to tabulate the distribution of data within a class, and to perform arbitrary arithmetic operations on the data. They also possess the capability to prepare graphical displays of the data in the form of maps. Now that remote …

Geologic Application Of Landsat Imagery Enhanced By Topographic Data, Guy Rochon, Miodrag Roksandic

LARS Symposia

Structural analysis of geological phenomena may be enhanced by real or simulated illumination conditions of satellite data. With this concept in mind, an experimental project has been developed to manipulate the Landsat radiances under the control of simulated illumination conditions and viewing geometry. To achieve this, a digital terrain model (DTM) was created by digitizing contour lines of topographic maps on a scale of 1 to 50,000. Using a specially designed algorithm, elevation was later calculated for each grid point at an interval of 50 meters on the ground and overlaid on a geometrically corrected Landsat image. After calculation of …

On The Slope-Aspect Correction Of Multispectral Scanner Data, P. M. Teillet, B. Guindon, D. G. Goodenough

LARS Symposia

The effects of topography on the radiometric properties of multispectral scanner (MSS) data are examined in the context of the remote sensing of forests in mountainous regions. The two test areas considered for this study are located in the coastal mountains of British Columbia, one at the Anderson River near Boston Bar and the other at Gun Lake near Bralorne. The predominant forest type at the former site is Douglas fir, whereas forest types at the latter site are primarily lodgepole pine and ponderosa pine. Both regions have rugged topography, with elevations ranging from 275 to 1500 metres above sea …

Identification Of Agricultural Crops By Computer Processing In The Provinces Of Cordoba And La Pampa - Argentina, Mirta A. Raed, Cecilia Espoz

LARS Symposia

This paper deals with agricultural inventory parameters from LANDSAT digital data extracted via an interactive processing system.

In this study, a man-machine interactive processing system performed the analysis of LANDSAT digital data. Specifically, multispectral agricultural crop identification and spatial area determination, within the study areas, were carried out.

A temporal coordination between the multispectral LANDSAT satellite and the ground truth of the same area was attained, from which two test fields digitally classified, in accordance with crop species, crop varieties and soil types of the same place were chosen.

The results illustrate the importance of interactive processing for analyzing LANDSAT …

Computer Generated Maps From Digital Satellite Data: A Case Study In Florida, L. G. Arvanitis, R. M. Reich, R. Newburne

LARS Symposia

The availability of satellite data and the advantages offered by automatic machine-processing of such data have opened up new and exciting possibilities for developing ground cover maps. Two Landsat analyses techniques (an unsupervised clustering algorithm called Landsat Signature Development Program, and an interactive method based on the Multispectral Image Analyzer) are used to compare computer generated character maps to known earth surface features. Data samples are shown and applications are discussed. Reference is made to the value of the digital computer in natural and man-made features mapping and monitoring, and suggestions are given for further research.

Application Of Remote Sensing And Geographic Information System Techniques To Evaluate Agricultural Production Potential In Developing Countries, Ger Schultink, Weldon Lodwick, J. B. Johnson

LARS Symposia

The Comprehensive Resource Inventory and Evaluation System (CRIES) project uses a multidisciplinary approach to (1) assist developing countries to analyze their agricultural production potential, and (2) enhance their capabilities to conduct such analyses for policy formulation and evaluation. The project staff has collaborated within their respective disciplines with counterparts in the Dominican Republic, Costa Rica, Nicaragua, Syria, and Honduras to enhance each country's capacity to analyze agricultural production possibilities. The technical assistance provided has been in one of four functional areas. These are: (1) data acquisition; (2) information management and analyses; (3) analyses of policy alternatives; and (4) technology transfer …

A Development Of Interactive Image Processing Software System Tipe, Kiyonari Fukue, Haruhisa Shimoda, Toshibumi Sakata

LARS Symposia

Conventional monitors of image processing systems have not sufficient flexibility, expandability and easy-handing capability.

TIPE has been developed to overcome these problems. The monitor of TIPE consists of following three subsystems

(1) A scheduling system including a scheduler and menu files.

(2) A control parameter management system including a control parameter management module and control parameter files.

(3) A catalog system including a catalog management module, catalog files and a header management module.

Scheduling system is based upon menu files which are hierarchicaly organized. In the control parameter management system, control parameters are stored in a disc file called a …