10. Image processing exercise using LEOWorks
Inspecting an image
Start LEOWorks 3.0
Open the file LS7_190_31_09062001_B01.tif
Band 1, Landsat 7 image of Alban Hills
To inspect the distribution of the pixel values in the image choose Histogram.
Histogram for LS7_190_31_09062001_B01.tif
It is seen that the pixels have values in the range of 62 to 137. The pixel values are visualised in the gray scale image where pixel value 0 is shown as black and pixel value of 255 is shown as white. Therefore the image is gray with little contrast.
Choose View/Image Values to open a window with the matrix of the pixel values.
Matrix showing the pixel values of LS7_190_31_09062001_B01.tif. The area covered is the upper left corner which has pixel values
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