Intro To Photogrammetry with Kike Calvo I So You Want to Create Maps Using Drones?

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⏱ 0:14 Intro
⏱ 1:19 What is Photogrammetry?
⏱ 2:36 Vertical, Oblique & Horizontal (ground-based) photographs
⏱ 2:58 Stereoscopic line-of-sight Geometry
⏱ 3:27 Disadvantages of low oblique aerial photographs
⏱ 3:47 Close-Range Photography (CRP)
⏱ 4:47 Applications of Photogrammetry
⏱ 6:13 What Skills are Needed for Photogrammetry?
⏱ 6:50 What is a Photogrammetrist?
⏱ 7:24 Projective Geometry by Leonardo Da Vinci
⏱ 7:59 How to calculate the distance between two points that lie on a plane parallel to the image plane?

What is Photogrammetry? The combination of light (photo), drawings (gram) and measurements (metry) are known as photogrammetry. Until recently, photogrammetry was a very specific niche within the geospatial industry: a rather complex subject, accessible only to specialized professionals.

However, this field is becoming more and more broadly accessible. Photogrammetry has become a field in which, despite the need for some initial training and effort to understand the basics, there are many useful applications such as creating 3D maps using aerial images. To put it simply, aerial photogrammetry is the act of mounting a camera on an aerial vehicle and taking multiple photos of the ground as it flies. The resulting visuals are then processed in a powerful computer using specialized software that creates a survey-grade output that is georeferenced and scaled. This allows us to make measurements from photographs, giving photographers the chance to pinpoint exact positions of surface points.

With the advent and continuous evolution of computer imaging, the process of photogrammetry is becoming easier and easier. Applications of Photogrammetry With these images, scientists (or even you, if you learn how to do it) can create numeric models of natural systems. This creates the possibility of developing predictions and controlling the effects of natural disasters. From earthquakes, to tsunamis, to the flow of rivers descending from a mountain, the forces of nature can be more easily measured.

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