![Figure 1 from A fisheye distortion correction algorithm optimized for hardware implementations | Semantic Scholar Figure 1 from A fisheye distortion correction algorithm optimized for hardware implementations | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/04a529a4b8e4b3aa098c6daeba9ec54c769b2bc6/1-Figure1-1.png)
Figure 1 from A fisheye distortion correction algorithm optimized for hardware implementations | Semantic Scholar
![Sensors | Free Full-Text | Automatic Distortion Rectification of Wide-Angle Images Using Outlier Refinement for Streamlining Vision Tasks Sensors | Free Full-Text | Automatic Distortion Rectification of Wide-Angle Images Using Outlier Refinement for Streamlining Vision Tasks](https://www.mdpi.com/sensors/sensors-20-00894/article_deploy/html/images/sensors-20-00894-g006.png)
Sensors | Free Full-Text | Automatic Distortion Rectification of Wide-Angle Images Using Outlier Refinement for Streamlining Vision Tasks
![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
![High-precision calibration of wide-angle fisheye lens with radial distortion projection ellipse constraint (RDPEC) | SpringerLink High-precision calibration of wide-angle fisheye lens with radial distortion projection ellipse constraint (RDPEC) | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00138-022-01296-9/MediaObjects/138_2022_1296_Fig13_HTML.png)