GIS Blog

Join the Band (Combinations)

Most satellite images have multiple bands.  We can change the way an image is displayed to highlight certain features in the images. With kudos to Little Feat’s Join the Band album, we’ve been looking at satellite images a lot recently and have seen how many satellite images are composed of multiple bands, or layers.  When working with…

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The Paint-By-Number Tool

We can use remotely sensed images to extract useful information about the land surface using image classification.  The first step is usually segmentation, which groups pixels with common properties together.  This post is a quick look at what it is and how to do it. Ah, a nice, relaxing paint-by-numbers landscape for a Friday.  While I’d…

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