This document summarizes the early history of photography, including the invention of key photographic processes: The camera obscura was an early optical device that projected an image and helped lead to the development of photography. Joseph Nicéphore Niépce created the first permanent photograph in 1826 using a camera and asphalt to capture an image of a country scene. Louis Daguerre later invented the daguerreotype process which produced the first commercially successful photographic process that resulted in highly detailed positive images on silver-coated copper plates. John Herschel invented the cyanotype process, also known as the blueprint process, which produced cyan-blue prints on light-sensitive paper and was popular for reproducing engineering drawings.