FEATURING GEO LINK TO IMAGE IN ER Mapper 7

In the ER Mapper application, the term means GeoLink make connections between two or more images in a different window. GeoLink mode should be in the same projection system. ER Mapper provides GeoLink modes include: Window mode is the relationship of two or more different image in the display window on the windows the same extent.

Screen Mode is the relationship between the image where the image as a master, while the other image relative to him.

a. GeoLink to Window

GeoLink to window provides an easy to observe some of the images that have the same coverage area, or nearly the same at the same time in separate windows, but with the same scale.

• To provide first started, two different image data in the same projection system (eg landsat_indonesia.ecw and pangrango_001_geo.ecw)
• Open a new window by clicking the open fi twice to display two windows
• Click to load the data (Landsat indonesia.ecw) the unity window, and click to load the data (pangrango_001_geo.ecw).

• For the window to one and the second window, right-click and then click Quick Zoom | Set GeoLink to Window to create a window mode.

• Two windows are connected to each other, and the addition can be done to make GeoLink window window as much as possible.

b. GeoLink to Screen

GeoLink GeoLink to Screen is a system in which one image is displayed with a particular viewing position, while the other images will have the same position and tied with the first image window. So GeoLink to screen this will have a display as an overlay, but with separate layers for different window for each image.

• To provide first started, two different image data in the same projection system (eg landsat_indonesia.ecw and pangrango_001_geo.ecw)
• Open a new window by clicking the open fi twice to display two windows
• Click to load the data (Landsat indonesia.ecw) the unity window, and click to load the data (pangrango_001_geo.ecw).

• For the window to one and the second window, right-click and then click Quick Zoom | Set GeoLink to Screen for making screen mode.

• Two windows are connected to each other, and can be done to make GeoLink addition of window screen as much as possible.

Overlay and Algorithms

Algorithm is the basic building within ER Mapper algorithm stores all the information necessary to display the data as an image. The information stored in an algorithm includes a data source, the colors used for display, data processing steps in detail. An algorithm is a revolutionary concept that separates the data from data processing. All data integration, data processing options other files contained in the algorithm. All this is created and edited by ER Mapper, ER Mapper which contain different types of data processing algorithms.

• Please open the file that has been available (eg Landsat indonesia.ecw)
• Open the window by clicking the algorithm (RGB): RGB, so the image appears like this

• Click the button text [RGB] RGB to activate the layer file
• Click the paste to duplicate the layer so that the display becomes as shown below

• Click on the topmost layer (as shown in the figure above) then click the blue layer to loading new data, and select the file you want the dioverlay (eg pangrango_001_geo.ecw).
• Storing files in the. Alx, for example, is stored with the name citra1.alg.
• To open the algorithm, from the menu bar select File, then select Open, select the name of the algorithm are shown.

TWO IMAGE mosaic

• Open the two images in a different window so as to produce images like this

• On one of the select window, window display lights up blue. Then click the [RGB] RGB to open the display algorithm.
• Activate the text [RGB] RGB and the new window click to copy the file layer.
• Then turn on the only window, and click the [RGB] RGB to display algorithm.
• Click the paste icon to paste the previous file layer, and zoom all datasets
• Will appear as below

• Do file storage, can be in the form. ALG, res, tiff, or ECw.

Or can also use the following steps:

• Make sure the file you want to dimosaik be in one folder and have the same projection system.
• Click blur (image display and mosaic wizard) on the ER Mapper window.
• Enter any of the files that will dimosaik by clicking open the file and activate the Mosaic all files of this type and Manually set mosaic method.


 
• Click Next to move on.
• - Enable Cell sizes, Types of data, Number of bands, and Coordinate Systems. Then click Next to start the process.





Mosaic results will appear after it is complete.

• If you want to vary the file to be in the mosaic, mosaic type, or otherwise, click on the option that appears to repeat the process.
 
• Click Finish to close the dialog box.

View Map / image in the mosaic and map / image of the mosaic

More about → FEATURING GEO LINK TO IMAGE IN ER Mapper 7

TUTORIAL SOFTWARE ER Mapper 7.x

Activate ER Mapper Software Ver. 7.x

• From the Windows XP or Windows 98/NT/2000 disable / close all other programs that are performing well and disable the screen saver program so as not to interrupt the work process to be performed.
• From the Start menu select Programs and then select ER Mapper 7.x, then the image will appear as follows:

• Select Run ER Mapper in Evaluation Mode when we do not have a Permanent License on the Software. Wizard will not appear when the permanent License Mapper ER has been held on a computer is concerned.

• Or from a desktop computer can be searched shortcut icon as shown below, then click two times, so also will display a menu like the one above.

Figure: Schematic satellite image processing tool using ER Mapper software

ERMAPPER application has 3 (three) windows / main window which is used to perform image processing in digital, that is the main window (Ermapper window), window image (image window) and window algorithm (algorithm window).

Er Mapper 7.0 Main Window

Display window Er Mapper 7.0

Window algorithm Er Mapper 7.0

Through the main window we can do and bring a variety of modules which are provided for image processing. All the image manipulation process, both formulas, filtering, preparation of composite and the other is displayed in the window algorithm. So we can say that this store window algorithm formulas that we do image processing. We can also do the editing of the image manipulation process through the window of this algorithm. The results of image manipulation will be displayed in the image window.

In the image window, there are several menus that can be run by right-clicking the mouse on the image window.

There are 5 groups of the menu that appears, namely:

Processing menu:

•       Stop Processing (ESC), is used to interrupt the ongoing image.

•       Image Refresh (F5), used to repeat the process of re-appearance of the image.

•       Clip, a sharpening of the display image based on pixel values ​​that appear in the coverage area of ​​the image window. Sharpening is done by stretching the contrast based on the minimum and maximum pixel values ​​of coverage are shown.

Zoom menu:

•       Previous Zoom, used to display images with the look as before.

•       Zoom In, rear view

•       Zoom Out, shrink the display

•       Zoom to All Datasets, to zoom to the entire dataset area / surface are shown.

•       Zoom to Current Dataset, zoom on area of ​​coverage of the dataset (layer / surface) were selected.

•       Zoom to All Raster (Vector) Datasets, to zoom to the entire raster data (vector) are shown.

•       Extent Zoom to Page, zoom into an area the size of paper used (depending on its setup page).

•       Zoom to Page Content, zooming in on the contents of the map layout.

•       Set GeoLink to None, remove GeoLink image window.

•       Set GeoLink to Window (Screen / Overview Zoom / Overview Roam), set the image window to window geoling another image.

File menu:

Group menu contains standard menus are also available on the main window Ermapper.

Pointer menu:

These menus are used to change the mouse cursor functions:

•       Hand, used for shifting the display image.

•       Zoom, used to enlarge or shrink the image display by clicking the left mouse  drag down to raise or up to down.

•       Zoom Box tool, used to zoom on a particular area in accordance with the desire to give depth to an area of ​​the box area in the area to be enlarged.

•       Pointer

Ø  Information menu:

•       Algorithm, is used to display the window algorithm.

•       Cell Value Profile, to display the pixel value information window.

•       Cell Coordinate, to display the information window coordinates.

Ermapper can display multiple image windows at once, but it only shows one window algorithm. The algorithms presented is an algorithm of the currently active window image or active the last time.

Surface    : can be said as a dataset, in which a single surface can consist of one or more                   layers. There are several types to choose from a surface, namely Pseudocolor, Red 

Green Blue or Hue Saturation Intensity. 

Layer : can only be on the surface, and can only display one channel only. 

Current surface / layer: a layer / surface is highlighted (highlight), the layer is currently active / 

selected for further processing if we do a copy, duplicate, move up / down or turn off / on. 

Invalid layer : the layer that does not correspond to the selected type of surface 

(pseudocolor, RGB or HSI). This layer will be displayed with a red cross and will not appear in the image window. 

Off layer : the layer is not active, so it does not appear in the image window. 

Surface : can be said as a dataset, in which a single surface can consist of one or more layers. 

There are several types to choose from a surface, namely Pseudocolor, Red Green Blue 

or Hue Saturation Intensity. 

Layer : can only be on the surface, and can only display one channel only. 

Current surface / layer : a layer / surface is highlighted (highlight), the layer is currently active / selected for further processing if we do a copy, duplicate, move up / down or turn off / on. 

Invalid layer : the layer that does not correspond to the selected type of surface 

(pseudocolor, RGB or HSI). This layer will be displayed with a red cross and will not appear in the image window. 

Off layer : the layer is not active, so it does not appear in the image window.

More about → TUTORIAL SOFTWARE ER Mapper 7.x