![]() ![]() ![]() In the bottom of the same window, check Clear Display(this clears the data from the display window). Get it? You can change the assignment of bands to color guns by clicking on the Multispectral tab and go to Bands where you will see the three color guns to assign. If you entered layers (or bands) 3,2,1 in that order, it would assign band 3 to color gun 1 (red), band 2 to color gun 2 (green), and band 1 to color gun 3 (blue). This is telling you that we are assigning band 1 to the first “color gun”, which is red band 2 to the second color gun, which is green and band 3 to the third computer color gun, which is blue. Under the heading “Layers to Colors” on the Raster Options tab of the Open Raster Layer window, we can specify which computer color gun is used to display a certain band. How many columns of data do we have? _ Rows?_ (2 points).After the Metadata dialogue box opens (this may take a bit!) click on the General tab and find the Layer Info data box, in this look at the Height and Width numbers. Once the image is displayed, you can retrieve information regarding various characteristics of the layer by clicking on the Metadata icon under the Home tab (the icon looks like a piece of paper with an “i” in the center). How many bands are available? What are the wavelengths represented by Spot’s Multi-spectral Scanner (XS) sensor (provide the band number, name, and wavelength)? (4 points) Use your textbook for this question.Īfter answering the above questions, click OK.At the very bottom is additional information, including the number of columns and rows and the number of bands in the image. Look at the other information in the Select Layer to Add window under the Raster Options tab. The data in this file are from a subset of SPOT’s multi-spectral sensor over western Kansas near Garden City. In your directory, select (highlight) the file garden.img, but don’t click OK just yet. Select your personal folder from the “Look in:” dropdown menu. The Select Layer to Add window should now appear. To display an image, right click on “2D View #1” under the contents menu on the left side of the screen and click on “Open Raster Layer…”, or simply click on the open file icon at the very top left of the screen. You can resize these windows by grabbing the corners of the windows with your cursor, or you can move the windows around if you so desire. A “viewer”, a black screen in which images are displayed, should also come up. Followed by the main IMAGINE menu, a panel across the top of the computer screen. After a moment the IMAGINE logo should come up, there may be license expiration information, click “Continue”. Navigate to the folder that you just created, right click and choose paste.Ĭlick on the Start button and search ERDAS Imagine 2014. Right click on the Lab04 folder and choose copy. Go to your directory and create a Lab04 folder. OĞxample: Layer 1 in SPOT image may not be SPOT Band 1 What the computer assigns Layer 1 may not correspond to Band #.OĞxample: SPOT Band 2 (red) can be displayed with green color gun when displaying image in IMAGINE, we can specify which bands we want to display with which color gun (Red, Green, Blue). end up with 1/3 black, 1/3 gray, & 1/3 white OĜontrast stretching temporarily contrasts the numbers doesn’t corrupt original values OĚll look dark gray because they are so close on the 255 range Many times DNs don’t occupy the full range.Original range of DNs expanded to utilize a fuller contrast range of display device.Redistribution of DNs along the bit scale to utilize more of the gray scale.Improving detectability of objects by increasing the variation of tones.Lab 09 - Descriptive Spatial Statistics and Point Pattern Analysis Lab 07 - Siting a New School with Model Builder and Fungus weight Lab 06 - Cost Distance, Region Groups, more Model Builder & Python Lab 01 - Data survey and database building Lab - ELECTROMAGNETIC RADIATION PRINCIPLES Lab - INTRODUCTION TO UNIT CONVERSION & SCALE PROBLEMS Lab - INTRODUCTION TO IMAGE INTERPRETATION Lab - Introduction to ERDAS IMAGINE (Part II) Lab - Data Acquisition and Image Preprocessing Lab 09 - Interpolation and Fire Hazard Modeling Lab 08 - Introduction to network analyist and ArcScene Lab 07 - Overlay & site suitability analysis Lab 04 - On-Screen Digitizing & Image Restoration Lab 03 - Using GPS for Field Data Collection Lab 02 - Projections and Coordinate Systems ![]() Lab 13 - Earth Observing Missions Imagery Lab 11 - Remotely Sensed Imagery and Color Composites Lab 03 - Coordinates and Position Measurements Lab 02 - Introduction to Google Earth Pro ![]()
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