Part 1—Download Images and Software

In any step, click the Show me link to reveal extra information. If you prefer a printout of the full set of instructions for this part, choose Print from the File menu.

Step 1-Download the Images

NASA's Scientific Visualization Studio has prepared Landsat data into a set of three time-series images-each image shows the Pearl River delta region at a different time. Use the following text links to download the 3 images to your computer.

Thumbnail of three satellite images
Image 1 ( 391kB May8 04)

Image 2 ( 373kB May8 04)

Image 3 ( 406kB May8 04)
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  1. Click the Image 1 ( 391kB May8 04) link to open the image, then right-click the image to display a menu of choices. (Mac users-hold down the ctrl key and click)
  2. Select the browser command to download the image to your computer. The command may read Save image as... or Download Image to Disk, depending on your browser application.
    Selecting the Save Image As... option
  3. Select a place to store the images (put them in your Downloads folder, or create a new folder named Pearl River Images).
  4. Keep the default image name, and click Save. Depending on how your computer handles downloaded files, you may need to change or add a .jpg extension to each file name.
  5. Repeat for Image 2 ( 373kB May8 04) and Image 3 ( 406kB May8 04).

Troubleshooting note: You must download and save each of the three images to your hard drive. This is necessary so you will be able to open the image files within the image processing software in Part 2.


NOTE: See the Going Further section for links to additional sets of registered images for practicing this technique.

Step 2-Download and Install ImageJ Software

Access the ImageJ download page (more info) , and download and install the application for your operating system.

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  1. Click the 'ImageJ Download page' link above to open the ImageJ Download page in a new window.
    2. Logo for ImageJ
  2. On the download page, click the link that appears directly below the name of your computer's operating system (e.g. Mac, Windows, Linux). This action will transfer a compressed file of the software to your computer. Your browser should automatically expand the file, creating an ImageJ folder on your computer's hard drive.

For more details, or if you have problems running the application, access ImageJ's Installation Instructions then select your operating system.


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