As you already know, drone surveying greatly accelerates and simplifies collection of land surface data to create large-scale maps or panoramic images of surveyed objects or landscapes. These maps and large images are stitched together from hundreds or even thousands of high-resolution photos of an area. One thing to remember when planning a drone survey is that to get high-quality results and facilitate image stitching, an overlap between individual images is absolutely essential. Taking images that don’t have enough overlap will lead to inaccurate results or a processing failure when stitching imagery, which will ultimately require repeating the survey to capture the images again.
This week, you’ll be working with 28 individual photographs of a stretch of the Murramarang South Coast Walk captured by a drone. The photographs come in two formats, neatly ordered or jumbled, so you can choose your own adventure. If you decide to work with the ordered photographs, you can proceed straight to stitching them together into a panoramic image. If you want a bit of a challenge, go with the jumbled images and arrange them into a correct sequence before proceeding to post-processing. To figure out how to order the images, you need to pay close attention to the overlap between them. If you see that two photos have the same reference points (e.g., a particular rock formation), it’s most likely that they should be next to each other. If you choose to work with the ordered photographs, take a moment to look at them one after the other and pay attention to how much overlap neighboring images have. One thing to keep in mind is that all images were taken at the same altitude, so they should form a straight line when you order them.
Let’s now dive into your task!