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Figure 1 from An efficient correction method of wide-angle lens distortion for surveillance systems | Semantic Scholar
![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 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](https://imageproxy.ifunny.co/crop:x-20,resize:640x,quality:90x75/images/25523db33297a8a7044f5dead4afcb5b20813c6242b2676f0efdc5a2c6e06731_1.jpg)
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
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Figure 1 from A fisheye distortion correction algorithm optimized for hardware implementations | Semantic Scholar
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