diaLab5ImageRatioingTutorial110212(1)

diaLab5ImageRatioingTutorial110212(1) - GEO 4037C AND 5033C...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
GEO 4037C AND 5033C DIGITAL IMAGE ANALYSIS Lab 5: Image Ratioing
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Introduction Image Ratioing is a way of mapping land covers and other surfaces that have a high reflectance in one band and low reflectance in another band. It is a method of removing the reflective properties of the atmosphere (scattering and absorption) and topography (shadowing, different sun angles etc.) to make analysis and interpretation easier. You will submit a screen capture of your image ratioed, density-sliced image of St. Vincent Island along with the answers to the questions found on the last two pages of the lab instruction.
Background image of page 2
Image Ratioing See the lab 5 instructions and questions document for detailed information on what to submit before starting the lab. Copy the image that you will need from the R: drive. Path to the data is: R:\GIS 4037c Digital Image Analysis\DIASpring2011\DIALabExercises\Lab5I mageRatioing\Data DO NOT WORK DIRECTLY FROM THE R:DRIVE.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Open ERDAS Imagine and set the Session Preferences to the directories where you will be working. Open this image with no stretch applied by Imagine, and set you Viewer Preferences to No Stretch . Also ensure that Clear Display and Fit to Frame are checked (this will display the entire image in your viewer when you open it).
Background image of page 4
Display the image STVincent.img found in your course directory ( R:\GIS 4037c Digital Image Analysis\DIASpring2011\DIALabEx ercises\Lab5ImageRatioing\Data\S TVincent.img ) as a false color composite (Band 4 to the Red Color Gun, Band 2 to the Green Color Gun and Band 1 to the Blue Color Gun). This is a full MSS scene of the southern portion of St. Lucia, the whole of St. Vincent and the Grenadines, and part of Grenada. The entire image should be displayed
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/30/2011 for the course GISC 4037C taught by Professor Roberts during the Spring '10 term at FAU.

Page1 / 24

diaLab5ImageRatioingTutorial110212(1) - GEO 4037C AND 5033C...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online