Which of these inventors worked on improvements to motion picture technology?

Thomas Edison is recognized for his significant contributions to the development of motion picture technology during the late 19th and early 20th centuries. He was instrumental in the creation of the Kinetoscope, an early motion picture exhibition device. Edison's work laid the groundwork for the future of cinema, allowing individual viewers to watch short films through a peephole viewer. His innovations in capturing and projecting moving images helped propel the film industry forward and influence how motion pictures were created and presented.

Other inventors like George Eastman contributed to the photographic process with the development of roll film, which was crucial for the evolution of moving images, but Edison's direct involvement in motion picture technology itself distinguished him in this regard.