Sub-Pixel Corner Detection for Camera Calibration

Starting from a pinhole camera model, we introduce real lens distortion through the Brown-Conrady model, and contrast the standard rectilinear f-tan(θ) projection with the equiangular f-θ lens design used in machine vision.

A visual and mathematical introduction to homography — how to map any flat surface onto any other using projective transformations.

Using homography, CSS transforms, and a phone camera to project live video onto a cyberpunk storefront — all running in the browser.