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A diverse assortment of lighting and electrical products were also cataloged, such as exit signs, backup batteries, dimmer boards, connectors, effect projectors, chandeliers, marquee lights (and complete marquees), charging outlets for electric cars, switchboards, etc. Featured was a "Skyrocket" sign for Tilyou's Steeplechase Park in Coney ...
The first documented occurrence was in 1952, after the death of actress Gertrude Lawrence, though the house lights inside the theater were dimmed. [ 3 ] [ 4 ] The practice was initially very rare and was repeated only twice in the following quarter-century: for Oscar Hammerstein II in 1960 (involving the dimming of marquee lights, which became ...
Light-emitting tubes form colored lines with which a text can be written or a picture drawn, including various decorations, especially in advertising and commercial signage. By programming sequences of switching parts on and off, there are many possibilities for dynamic light patterns that form animated images .
PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF)—unofficially, the initials PNG stood for the recursive acronym "PNG's not GIF". [ 6 ] PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without an alpha channel for transparency), and ...
The PNG (Portable Network Graphics) file format was created as a free, open-source alternative to GIF. The PNG file format supports 8-bit (256 colors) paletted images (with optional transparency for all palette colors) and 24-bit truecolor (16 million colors) or 48-bit truecolor with and without alpha channel – while GIF supports only 8-bit ...
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Animated Portable Network Graphics (APNG) is a file format which extends the Portable Network Graphics (PNG) specification to permit animated images that work similarly to animated GIF files, while supporting 24 or 48-bit images and full alpha transparency not available for GIFs.
Color cycling, also known as palette shifting or palette animation, is a technique used in computer graphics in which colors are changed in order to give the impression of animation. This technique was used in early video games , as storing one image and changing its palette requires less memory and processor power than storing multiple frames ...