diaLab1HistogramPP110107

diaLab1HistogramPP110107 - Geo 4131 Digital Image Analysis...

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Unformatted text preview: Geo 4131 Digital Image Analysis Lab 1 Working With Histograms Turning in Labs In this lab you will learn how to read a histogram from an image. Introduction This tutorial will show you how to obtain statistical information about the reflectance characteristics of your data set. In particular, it will give you both a graphic and numeric view of the dataset. It can be printed out and analyzed better than the onscreen views of the histogram. Process Copy the PA folder from R:\GIS 4037c Digital Image Analysis\DIASpring2011\DIAData\MSS\PA to your X: drive . Set your Session Preferences so your Default Data Directory and Default Output Directory are set to your X: drive folder. Then open the image file in the PA folder into Viewer #1 . Set your Session Preferences Adjust to your X: directory X: X: You are viewing a false color composite of a Landsat MSS scene of central Pennsylvania. To analyze the spectral characteristics of the dataset, we want to create, view and print out some statistics on the raw data. To do this, select UTILITY >LAYERINFO. This will open the Layer Info window. Notice that it gives you information on one layer or band at a time, regardless of what is displayed on the screen. You are looking at statistical information on the raw data, stored in the original file. Band 1 is being examined, but this can be changed to any band in the dataset. NLAPS is an older EROS data center file format....
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diaLab1HistogramPP110107 - Geo 4131 Digital Image Analysis...

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