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Petro Vlahos was an American engineer and inventor whose work made the modern visual-effects blockbuster possible. Petro Vlahos (Greek: Πέτρος Βλάχος; August 20, 1916 – February 10, 2013) was an American engineer and inventor, considered to be one of the pioneering scientific and technical innovators of the motion picture and television industries. He is remembered in particular for creating the Ultimatte process, which refined chroma key or blue screening. For his contributions, Vlahos received three Oscars and an Emmy. Vlahos was born in Raton, New Mexico, the son of Greek immigrants. He showed an early aptitude for electronics and ham radio, and in 1941, he gained his Engineering degree from the University of California at Berkeley. He worked as a designer for Douglas Aircraft in World War II. After the war, he turned his engineering skills to the motion picture industry, where he spent the rest of his career solving visual-effects problems that had stumped Hollywood for decades. Along with his son, Paul Vlahos, he founded the Ultimatte Corporation in Chatsworth, California, in 1976. His company's first Ultimatte units were analog "black boxes" which later evolved into advanced, real-time digital hardware and computer software products. He died in Los Angeles in 2013 at the age of 96.

Vlahos's accomplishments are a long string of technical breakthroughs and industry honors. His foundational achievement was a refined blue-screen process. For the film Ben Hur he refined the color-difference bluescreen process that made memorable visual effects possible in films and developed a way to minimize the unfortunate side effects of earlier methods. Vlahos' breakthrough was to create a complicated laboratory process which involved separating the blue, green and red parts of each frame before combining them back together in a certain order. He moved the process along and introduced the use of motion control cameras during bluescreen work. He called his cutting-edge invention the colour-difference travelling matte scheme. The Academy honored him repeatedly. A member of the Academy's original Motion Picture Research Council, Vlahos was honored by the Academy of Motion Picture Arts and Sciences many times, starting with a Scientific and Technical Award in 1960 for a camera flicker indicating device. He earned an Oscar statuette in 1964 for color traveling matte composite cinematography and another in 1994 for the Ultimatte electronic blue-screen compositing process, the first of its kind. He received the Medal of Commendation in 1992 and the Gordon E. Sawyer Award, an Oscar statuette, in 1993. In all, Petro Vlahos held more than 35 patents for film-related gadgetry. He was also recognized with an Emmy for Ultimatte and the Herbert T. Kalmus Award from SMPTE.

Vlahos's techniques sit at the heart of nearly every visual effects shot made for the last half-century. Petro Vlahos consistently devised solutions that made the modern blockbuster possible - he is remembered in particular for creating the Ultimatte process, which refined the colour process known as "bluescreening" or alternatively "greenscreening" to solve the transparency, edge-sharpening and "blue spill" problems of simple chroma keying, and combining this with motion control camera technology to create the modern special effects shot. This technology allows film editors in post-production to digitally remove an image of an actor working in front of a usually blue or green colored background and insert him into any computer-generated or other preexisting digital background. His work appeared first in classic films like Ben-Hur, The Birds, and Mary Poppins, where his color-difference matte made Julie Andrews's dance with animated penguins possible. When sci-fi and fantasy films became dominant at the box office, Vlahos' techniques became dominant in filmmaking, essential to movies such as the Star Wars trilogy. Refinements of his pioneering technique were used to make many of the blockbuster films of the 1990s, notably Titanic (1997), in which dangerous, expensive or difficult to film scenes were finally possible. As the original patents ran out, many other present-day digital blue screen and green screen compositing systems were derived from Ultimatte and joined it in the marketplace. As a result, every green screen or blue screen shot in innumerable films (including every blockbuster fantasy film of recent times) employs variants of the original Vlahos techniques. Television weather maps, virtual studios, livestreams with virtual backgrounds, and modern LED-wall virtual production all descend from his work.

George Lucas is an American filmmaker, screenwriter, producer, and entrepreneur who became one of the most influential figures in the history of cinema. Lucas was born George Walton Lucas Jr. on May 14, 1944, in Modesto, California. Lucas's parents sold retail office supplies and owned a walnut ranch in California. His experiences growing up in the sleepy suburb of Modesto and his early passion for cars and motor racing would eventually serve as inspiration for his Oscar-nominated low-budget phenomenon, American Graffiti (1973). A near-fatal car accident shortly before his high school graduation steered him away from professional racing and toward filmmaking. He studied film at the University of Southern California, where he produced several notable short films, including "Electronic Labyrinth," which won awards and led to his first feature film, "THX 1138," in 1971. He found early support from director Francis Ford Coppola. In 1969, Lucas and Coppola co-founded American Zoetrope, an independent production company aimed at giving filmmakers greater artistic freedom. When Coppola shifted his focus to directing The Godfather, George Lucas founded his own company, Lucasfilm Ltd., in 1971. This move marked a decisive step toward full creative autonomy. Lucas has remained based in Northern California ever since, deliberately positioning himself outside of Hollywood's traditional studio system.

Lucas's accomplishments span filmmaking, entrepreneurship, and technology. His feature credits include THX 1138 (1971), American Graffiti (1973), and the original Star Wars (1977), which he wrote and directed. Lucas served as executive producer of the other two episodes in the original trilogy, Star Wars: Episode V—The Empire Strikes Back (1980) and Star Wars: Episode VI—Return of the Jedi (1983). Lucas also created the popular character of the adventurous archaeologist Indiana Jones, who was played by Ford in a series of films, beginning with Raiders of the Lost Ark (1981), directed by Steven Spielberg. He later wrote and directed the Star Wars prequel trilogy (1999, 2002, 2005). As a businessman, his accomplishments are equally formidable. In 1971 Lucas formed the production company Lucasfilm Ltd., which eventually contained a number of divisions, including Industrial Light & Magic (ILM, established 1975), which was regarded as the most prestigious special-effects workshop in American film. Lucasfilm's offshoots included Skywalker Sound, the THX audio certification program, and the computer division that eventually became Pixar. In 2012 the Walt Disney Company purchased Lucasfilm for $4 billion. Lucas has also been a major philanthropist, founding the George Lucas Educational Foundation and pledging the bulk of the Disney proceeds to education.

Lucas's impact on global culture and the film industry is enormous and multifaceted. The original Star Wars fundamentally changed how movies are made, marketed, and merchandised, helping create the modern summer-blockbuster model and the franchise-driven business that dominates Hollywood today. If Star Wars wasn't game-changing enough, Lucas went on to create another blockbuster series with Indiana Jones, and he completely transformed the world of special effects and the way movies sound. His innovation and ambition forged Pixar and Lucasfilm, Industrial Light & Magic, and THX sound. His technical impact is just as significant as his creative one: ILM became the most important visual effects house in the world, pioneering motion-control photography, digital compositing, and CGI, and shaping nearly every effects-driven blockbuster of the last fifty years. George Lucas is an influential American filmmaker known for creating the iconic "Star Wars" and "Indiana Jones" franchises, which have left a lasting impact on the film industry and popular culture. This groundbreaking film not only set box office records but also transformed special effects technology and the expectations for cinematic storytelling. Star Wars itself has become modern mythology, woven deeply into global pop culture across films, television, books, video games, theme parks, and merchandise. Through Pixar's spinoff, Lucas indirectly helped birth modern computer animation, and through THX he helped raise the standard of cinema sound worldwide.