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A front projection effect is an in-camera visual effects process in film production for combining foreground performance with pre-filmed background footage. In contrast to rear projection, which projects footage onto a screen from behind the performers, front projection projects the pre-filmed material over the performers and onto a highly reflective background surface.
Zenith introduces the first HDTV-compatible front projection TV in the U.S. CBS affiliate WCPO-TV and ABC affiliate WKRC-TV, both in Cincinnati, Ohio, switch network affiliations. 19 CBS affiliate WRAL-TV in Raleigh, North Carolina is awarded the first experimental high-definition television license in the United States. 23
TV: Yes DLP front-projection Flat (limited only by brightness) TV or presentation Yes LCoS self-contained rear-projection Flat 110 [13] 279 TV: Yes LCoS front-projection Flat (limited only by brightness) TV or presentation Yes Laser self-contained rear projection Flat lenticular: 75 [14] 191 TV: Yes LED: Flat 279.92 [15] 711 Billboards, TV: Yes ...
Projection television has been commercially available since the 1970s, but at that time could not match the image sharpness of the CRT. A variation is a video projector, using similar technology, which projects onto a screen. This is often referred to as "front projection".
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DLP technology is used in DLP front projectors (standalone projection units for classrooms and business primarily), DLP rear projection television sets, and digital signs. It is also used in about 85% of digital cinema projection, and in additive manufacturing as a power source in some SLA 3D printers to cure resins into solid 3D objects. [63]