🎈 Public Lab: Remove lens distortion from photos with FisheyeGL
Figure 1 from A fisheye distortion correction algorithm optimized for hardware implementations | Semantic Scholar
Lens Distortion: What Every Photographer Should Know
What is Lens Distortion?
What is a Wide Angle Lens? What Is a Fisheye Lens?
A different photographic lens might have a distortion of a different type & strength. But a straight line will always appear straight if it crosses the center of the frame. Rectilinear, Barrel