Incorporating Radial Distortion in Imaging Model

1. What is radial distortion?
2. What is distortion in imaging?
3. How is distortion corrected?
4. What is image distortion in photogrammetry?

What is radial distortion?

Radial lens distortion is the symmetric distortion caused by the lens due to imperfections in curvature when the lens was ground. In most cases, the errors introduced by radial lens distortion (around 1 to 2 um) are much smaller than the scanning resolution of the image (around 25um).

What is distortion in imaging?

Conclusion. Image distortion is when the straight lines of an image appear to be deformed or curved unnaturally, creating different distortion types, including barrel, pincushion, and waveform. Distortion is often the result of the lens's geometrics and can significantly disrupt the image's quality.

How is distortion corrected?

Most distortion correction techniques include 3 integral components: identification and registration of a fixed coordinate system (derived from a reference data set), quantification of the distortion, and a distortion correction algorithm (21).

What is image distortion in photogrammetry?

In photography, distortion is generally referred to an optical aberration that deforms and bends physically straight lines and makes them appear curvy in images, which is why such distortion is also commonly referred to as “curvilinear” (more on this below).