Introduction:The Magic of False Colour Image on ArcGIS Pro

That’s it! We have clusters of layers here -- what’s next? We need to enhance our Image, an art, to make it nice and pretty. Enhancing our Image is an excellent way to expand the visual aspect of our art by rising our perceived differences between the features. Allowing us to alter the numeral pixel values and band composite of our picture. To give us a background story of our image.

Now you may be thinking, how do we manipulate this? Through composite bands tool and symbology by right-clicking on the generated band composite!

Here I will select 8 bands—it’s up to you how many you want. So, let's begin.

But if you are the curious one. You may ask-why select bands 2-8? Instead of subtracting each band by 1? Could you just choose bands 1-8? Well, the answer is yes! We can let's use that as an example.

Tip: make the map even better, by removing the black background.

Now you may wonder-- how two same natural images are formed from different band combinations? Why minus bands 2-8 by 1? Why choose 8 as the highest band? I did this via a table,

I found from ArcGIS blog. Here it is! Adding an extra band won’t harm us, right? Yes, it's harmless

Note: There are numerous combinations, the table was just a tip of an iceberg and the arrangement must be in ascending order! You don’t want red to be shown as green? Save it for a horror movie.

That’s it! Once you have analysed the table above. Now I will show you four amazing false colour image examples in Tongariro National Park-- excellent for clearly visualising certain features in a landscape. To take things further—experiment a bit.

Band 5,4, 3 -Colour Infrared (vegetation) is commonly used to detect vegetation, crop and wetland cover

Note how healthy vegetation appears magenta/red. As healthier vegetation appears green (a blue display) and mirrors near-infrared light (a red display). Adding up blue and red display gives you magenta. Non-rural regions appear grey or blue. Still confused? Look at the amazing image produced below.

Bands 5,6,4 false colour composite can detect water and land

In this false colour image, the ice appears vibrant magenta, water in blue shades and land as green or orange. You can have a deeper understanding of the image below.

6, 5, 2 - False colour image is excellent for assessing agriculture

Here, agricultural crops are displayed as bright green, non-crop plants in subdued green shades and earth’s surface as magenta (explained in detail below).

5, 7, 1 - False colour, is another excellent any to analyse vegetation and water.

This is different from the other ones mentioned above as vegetation appears orange! That’s right. The Coastal Aerosol band is uncommon to Landsat 8, used to find small elements such as smoke and dust, and displays shallow waters. You may be wondering why orange? Well, this is the magic of false colours—It can be diverse and a bit random (shown in detail form the image below).

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