CLEAR Website

Presentations

A Preview of Recent Land Cover Mapping for Connecticut - This presentation provides an overview and update of the Connecticut's Changing Landscape multitemporal land cover project, including preliminary statistics and graphics that show landscape change in Connecticut over the 21-year period from 1985 to 2006. In addition to land cover, a number of other derived products are described. These include forest fragmentation mapping, urban growth modeling, and impervious surface estimation. CCNR 2008. 5.8 Mb

Object-oriented Classification and Mapping of Salt Marsh Vegetation Using in situ Radiometry and Multi-seasonal, High Resolution Satellite Remote Sensing Data - This presentation is about our research that uses high resolution multi-temporal QuickBird satellite imagery, in situ radiometry information, and image segmentation and object oriented classification techniques to map dominant vegetation species in select coastal marshes in Long Island Sound. MultiTemp 2007. 13.8 Mb

Quantitative Assessment of the Accuracy of Spatial Estimation of Impervious Cover - This project reports on several approaches to estimating percent imperviousness and is part of ongoing research aimed at developing a suite of analysis tools for effective land management. ASPRS 2007. 4.5 Mb

Simulating Future Suburban Development in Connecticut - The presentation proposes a method to simulate future changes in forest fragmentation resulting from suburban development in northeastern United States. Analysis results are presented for several towns in Connecticut. ASPRS 2007. 6.6 Mb

Urban Growth Analysis: Calculating Metrics to Quantify Urban Sprawl - The presentation describes a study that measured changes in urban sprawl for a global sample of 120 major cities over a 10 year period. Numerous metrics are proposed that enable rigorous measurements of the spatial structure in the study cities. ASPRS 2007. 1.0 Mb

Impervious Surface Estimation: A Comparison of Techniques - This project reports on several approaches to estimating percent imperviousnessand compares impervious surface estimates derived from modeling approaches such as Subpixel Classification, Impervious Surface Analysis Tool (ISAT) and Population Density and Land Use-based Regression model. NEARC 2006. 3.5 Mb

Forest Fragmentation in Connecticut: What Do We Know and Where Are We Headed? - This presentation provides an overview of forest fragmentation in the state of Connecticut. As the title says, what do we know and where are we headed. CT Forest Forum November 2006. 12.4 Mb

Classification of Coastal Wetland Systems using Multiple Remote Sensing Data Types and Analytical Techniques - This presentation is about our research that uses high resolution multi-temporal QuickBird satellite imagery, in situ radiometry information, and image segmentation and object oriented classification techniques to map dominant vegetation species in select coastal marshes in Long Island Sound. IGARSS 2006. 9.2 Mb

Classification of Tidal Wetland Communities using Multi-temporal, Single Season QuickBird Imagery - This presentation is about our research that uses high resolution multi-temporal QuickBird satellite imagery, in situ radiometry information, and image segmentation and object oriented classification techniques to map dominant vegetation species in select coastal marshes in Long Island Sound. ASPRS 2006. 4.6 Mb

The Urban Growth Management Initiative: Preliminary Results - Conducted as part of a team that included Columbia University and Williams College, CLEAR researchers looked at urban extent and expansion over a ten-year period for 120 cities with a population over 100,000, worldwide. This study, funded by The World Bank and the National Science Foundation, is providing insight into the relationships of population growth and urban expansion in developing countries. ASPRS 2005. 4.4 Mb

Temporal Characterization of Impervious Surfaces for the State of Connecticut - This presentation overviews the Sub-pixel Classifier and how it was used to estimate multi-temporal, per-pixel impervious surfaces from four dates of Landsat satellite imagery. ASPRS 2004. 5.1 Mb

Development of a Population Density and Land Use Based Regression Model to Calculate the Amount of Imperviousness - Developing, assessing and refining the regression-based modeling technique to be used with National Land Cover Data (NLCD) and population density to predict percent imperviousness. Interpolating population density value for Connecticut watersheds and estimating percent imperviousness for CT Census tracts and watersheds. ASPRS 2004. 8.1 Mb

Temporal Characterization of Connecticut’s Landscape: Methods, Results, and Applications - An overview methods for percent impervious quantification, land use change, urban growth modeling, and forest fragmentation characterization. ASPRS 2003. 19.8 Mb

A Comparison of Land Use and Land Cover Change Detection Methods - A comparison of the results of different land use and land cover change detection approaches: traditional post-classification cross-tabulation, cross-correlation analysis, neural networks, knowledge-based expert systems, and image segmentation and object-oriented classification. ASPRS 2002. 9.8 Mb

A Forest Fragmentation Index to Quantify the Rate of Forest Change - Using time series land cover information, changes in the forest landscape can be compared over time. Details of our model for calculating the forest fragmentation index are presented as well as a case study of its application to a town in one of the study watersheds. ASPRS 2002. 4.4 Mb

A Knowledge-based Appoach for Reducing Cloud and Shadow - Completely cloud-free remotely sensed images are not always available, especially in tropical, neo-tropical, or humid climates, posing complications and perhaps serious constraints to image analysis. A knowledge-based approach to reduce cloud and shadow using two dates of Landsat TM imagery is presented. ASPRS 2002. 2.1 Mb

Development of a Model to Quantify and Map Urban Growth - Our model produces an output map identifying five types of urban growth: in-fill, expansion, isolated, linear branching, and clustered branching. The resulting map presents a powerful visual and quantitative assessment of the type of urban growth occurring across the landscape, allowing local land use decision makers to see clearly the results of past land use choices as well as the potential effects of future decisions. The basis for the development of our urban growth model and examples of its application is presented. ASPRS 2002. 5.2 Mb

Subpixel Impervious Surface Mapping - This presentation is about subpixel impervious surface mapping using Neural Network Classifier and Erdas Subpixel Classifier technology. ASPRS 2002.

Measuring Impervious Surfaces for Non-point Source Pollution Modeling - This presentation is about measuring percent of impervious surface based on planimetric data and remote sensing derived landuse/landcover data for non-point source pollution modeling. ASPRS 2000.

Assessment of Land Use Change and Forest Fragmentation through Remote Sensing-based Visualizations - How do you use remote sensing based visualizations to assess land use change and forest fragmentation? You will have an idea after you view this presentation. ASPRS 2000.

Introduction to Remote Sensing - This presentation provides an introduction into the concepts, data, and applications of remote sensing.