Orthomosaic – A Great Tool

Orthomosiac imaging is something that many people have not yet heard of.

This is no surprise. Until very recently, this was something that was very expensive to produce. But, with the rise of drones, these are now easily within reach of any client budget.

What is it?

Put simply, an orthomosaic map is a detailed, accurate photo of an area that has been created from multiple photos that stitched together and geometrically corrected (“orthorectified”) so that it is as accurate as a map.

Because they are made up of multiple images, there is no limit to the size of an area that can be represented. I have personally produced ones for sites as large as 250 acres.

There is a very good description of these, and some of the uses, at UAV Coach which you can find here.

There are some feature of orthomosaic maps that make the very useful in a wide range of situations.

First, they are usually far more detailed than Google Earth and other online maps. As such, users have the option to view an overview or zoom in to see extreme detail. For example, these are the same image, but at different levels of zoom:

Zoom view

As you can see, it is possible to overlay these images on Google Earth for a situational view, but you can almost make out what is in the carts of the shoppers once zoomed in.

Other views

In addition to just looking at photos, a number of options are available. For example, before an after images, images showing altitude, and other views that can be used for planning purposes. Here are a few more examples:

Before / After
Elevation view
Street view

These are just a few examples. Orthomosaic images have so many uses we are really only limited by our imagination.

To discuss how orthomosaic images could be used in your project, fill in this simple form with some information on what you are looking to do and we will get right back to you.

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