Endoscope
Introduction
Background
Key Terms
Optical Aberration: errors in an image that are caused mostly by imperfect manufacturing and approximations made based on our knowledge and understanding of light. Some of the more common types are Spherical aberration, Coma, Astigmatism, Curvature of Field, Chromatic aberration, and in our case Distortion
Distortion: a commonly used term in modern day photography that refers to any deviation from rectilinear projection. Though distortion comes in a wide range of patterns and irregular forms, the most common types we see are "Barrel Distortion" and "Pincushion distortion" as depicted below.
Geometric Calibration: determination of the geometric relation of the imaging process of a camera