The Select Layer to Add dialog opens. In the list of files, click on convolve.img and then click OK . Clear from the menu bar of each Viewer. Answer Questions 2-3. In this section, you will use both the Inverse and Reverse options of the Image Inversion function to enhance images.
Inverse emphasizes detail in the dark portions of an image.
Reverse simply reverses the DN vales. Click OK in the Brightness Inversion dialog to start the process. A Job Status dialog displays, indicating the progress of the function. In the Brightness Inversion dialog, enter loplakebedsig357.img as the input file. Enter reverse.img in the directory of your choice as the output file.