Evans & Sutherland is an American computer graphics firm founded in 1968 by David Evans and Ivan Sutherland. Its current products are used in digital projection environments like planetariums. Its simulation business, which it sold to Rockwell Collins, sold products that were used primarily by the military and large industrial firms for training and simulation.
In the early 1970s they purchased General Electric's flight simulator division and formed a partnership with Rediffusion Simulation, a UK-based flight simulator company, to design and build digital flight simulators. For the next three decades this was E&S's primary market, delivering display systems with enough brightness to light up a simulator cockpit to daytime light levels. These simulators were used for training in in-flight refueling, carrier landing, AWACS, and B52.
Later in the 1970s the company expanded their line of simulation systems, first building a five-projector graphics system to simulate a ship steaming into New York Harbor and through its surroundings. This graphics system was installed on the mock-up of a ship's bridge and used to train ship's pilots how to navigate into and out of New York Harbor. The project, called CAORF (Computer Aided Operations Research Facility), was built for the US Maritime Academy.[3] The project paved the way for other visual simulation systems including a NASA Space Shuttle manipulator arm, EVS, submarine periscope and space station docking simulators.
Starting in 1969,[4] E&S produced the LDS-1 (Line Drawing System-1), and later the Picture System 1, 2 and PS300 series. These unique "calligraphic" (analog vector drawing) color displays had depth cueing and could draw large wireframe models and manipulate (rotate, shift, zoom) them in real time. They were used both in chemistry by pharmaceutical companies to visualize large molecules such as enzymes or polynucleotides, and by aerospace companies, such as Boeing, McDonnell-Douglas and others, to design aircraft.
The Evans & Sutherland Shaded Picture System was introduced in 1973, and was the first commercially available product capable of producing real-time, shaded hidden-line 3D graphics.[5] It was extremely expensive and could only produce black-and-white images at a resolution of 256x256.
The end of the Picture System line came in the late 1980s, when raster devices on workstations could render anti-aliased lines faster.
In 1978 the company went public with a listing on NASDAQ.
In the 1980s E&S added a Digital Theater division, supplying all-digital projectors to create immersive mass-audience experiences at planetariums, visitor attractions and similar education and entertainment venues. Digital Theater grew to become a major arm of E&S commercial activity with hundreds of Digistar 1 and 2 systems installed around the world, such as at the Saint Louis Science Center in St. Louis, Missouri.
In the mid-1980s Evans & Sutherland introduced a geometric modeling system called CDRS, that provided high quality surface design capabilities together with a photo-realistic rendering system. CDRS was sold to many well known manufacturers including both Ford & Chrysler.[6] CDRS was acquired by Parametric Technology Corporation in 1995.[7]
For a brief period between 1986 and 1989 E&S was also a supercomputer vendor, but their ES-1 was released just as the supercomputer market was drying up in the post-Cold War military wind-down. Only a handful of machines were built, most broken up for scrap. One sample ES-1 is in storage at the Computer History Museum.
During the 1990s E&S tried to expand into several other commercial markets. The Freedom Series graphics engine was developed to work with Sun Microsystems, IBM, Hewlett-Packard, and DEC workstations. 3D Pro technology was developed for the first wave of 3D graphics cards for PCs. Also, the MindSet virtual set system was created to address the needs of the broadcast video market.[8]
In 1993 Evans and Sutherland helped Japanese arcade giant Namco with texture-mapping technology in Namco's System 22 arcade board that powered Ridge Racer. The help that E&S gave Namco was similar to the help that Martin Marietta gave Sega with the MODEL 2 board that powered Daytona USA and Desert Tank arcade games.
In 1998 Evans and Sutherland acquired AccelGraphics Inc, a manufacturer of computer graphics boards, for $52m.[9]
Since its launch in July 2002, the company's Digistar 3 system became the world's fastest selling Digital Theater system and is installed in upwards of 120 fulldome venues worldwide.[citation needed]
On May 9, 2006 Evans & Sutherland acquired Spitz Inc, a rival vendor in the planetarium market, giving the combined business the largest base of installed planetaria worldwide and adding in-house projection-dome manufacturing capability to E&S' offering.
In 2006 Evans and Sutherland sold its simulation business, which for decades was the core of the company, to Rockwell Collins.[10]
On February 10, 2020 Elevate Entertainment and Evans & Sutherland announced that Elevate would purchase E&S for $1.19 per share in cash in a transaction valued at $14,500,000.[11]
Use in movies and special effects
An Evans & Sutherland computer was used in the creation of the Project Genesis simulation sequence in Star Trek II: The Wrath of Khan (1982). The star fields, and the tactical bridge displays on the Kobayashi Maru simulator and USS Enterprise were created by Evans & Sutherland employees and filmed directly from the screen of a prototype Digistar system at company headquarters.[12] This film was one of the first ever to use computer graphics (after Futureworld in 1976). Star fields and some of the other shots were reused in Star Trek III: The Search for Spock (1984) and later films.
NBC would later use an Evans & Sutherland Picture System for its 1984–1985 promotional campaign "Let's All Be There!", as well as subsequent campaigns, concluding with the 1989–1990 season promotional campaign "Come Home to the Best!".[13][14]
Rendering or image synthesis is the process of generating a photorealistic or non-photorealistic image from a 2D or 3D model by means of a computer program. The resulting image is referred to as a rendering. Multiple models can be defined in a scene file containing objects in a strictly defined language or data structure. The scene file contains geometry, viewpoint, textures, lighting, and shading information describing the virtual scene. The data contained in the scene file is then passed to a rendering program to be processed and output to a digital image or raster graphics image file. The term "rendering" is analogous to the concept of an artist's impression of a scene. The term "rendering" is also used to describe the process of calculating effects in a video editing program to produce the final video output.
Scanline rendering is an algorithm for visible surface determination, in 3D computer graphics, that works on a row-by-row basis rather than a polygon-by-polygon or pixel-by-pixel basis. All of the polygons to be rendered are first sorted by the top y coordinate at which they first appear, then each row or scan line of the image is computed using the intersection of a scanline with the polygons on the front of the sorted list, while the sorted list is updated to discard no-longer-visible polygons as the active scan line is advanced down the picture.
A framebuffer is a portion of random-access memory (RAM) containing a bitmap that drives a video display. It is a memory buffer containing data representing all the pixels in a complete video frame. Modern video cards contain framebuffer circuitry in their cores. This circuitry converts an in-memory bitmap into a video signal that can be displayed on a computer monitor.
Graphics are visual images or designs on some surface, such as a wall, canvas, screen, paper, or stone, to inform, illustrate, or entertain. In contemporary usage, it includes a pictorial representation of data, as in design and manufacture, in typesetting and the graphic arts, and in educational and recreational software. Images that are generated by a computer are called computer graphics.
The Roger B. Chaffee Planetarium, named for astronaut Roger B. Chaffee, was constructed in the early 1960s as part of the Public Museum of Grand Rapids. The facility initially featured a 30-foot (9.1 m) plaster dome and a Goto Optics mechanical star projector. Among the planetarium's first shows was "Star of Wonder", an astronomical attempt at an explanation of the Star of Bethlehem. The show received positive reviews in the Grand Rapids area and remained in the Chaffee's catalogue for several years.
The Fleet Science Center is a science museum and planetarium in Balboa Park in San Diego, California. Established in 1973, it was the first science museum to combine interactive science exhibits with a planetarium and an IMAX Dome (OMNIMAX) theater, setting the standard that most major science museums follow today. It is located at the east end of the El Prado Drive walkway, next to the Bea Evenson Fountain and plaza in central Balboa Park.
Armagh Planetarium is a planetarium in Armagh, Northern Ireland. It is located close to the city centre and neighbouring Armagh Observatory in approximately fourteen acres of landscaped grounds known as the Armagh Astropark.
A planetarium projector, also known as a star projector, is a device used to project images of celestial objects onto the dome in a planetarium.
Digistar is the first computer graphics-based planetarium projection and content system. It was designed by Evans & Sutherland and released in 1983. The technology originally focused on accurate and high quality display of stars, including for the first time showing stars from points of view other than Earth's surface, travelling through the stars, and accurately showing celestial bodies from different times in the past and future. Beginning with the Digistar 3 the system now projects full-dome video.
Fulldome refers to immersive dome-based video display environments. The dome, horizontal or tilted, is filled with real-time (interactive) or pre-rendered (linear) computer animations, live capture images, or composited environments.
Digistar Users Group (DUG) is an international association of facilities that own Evans & Sutherland (E&S) Digistar systems.
A vector monitor, vector display, or calligraphic display is a display device used for computer graphics up through the 1970s. It is a type of CRT, similar to that of an early oscilloscope. In a vector display, the image is composed of drawn lines rather than a grid of glowing pixels as in raster graphics. The electron beam follows an arbitrary path, tracing the connected sloped lines rather than following the same horizontal raster path for all images. The beam skips over dark areas of the image without visiting their points.
LDS-1 was a calligraphic display processor and display device created by Evans & Sutherland in 1969. This model was known as the first graphics device with a graphics processing unit.
Computer graphics deals with generating images and art with the aid of computers. Computer graphics is a core technology in digital photography, film, video games, digital art, cell phone and computer displays, and many specialized applications. A great deal of specialized hardware and software has been developed, with the displays of most devices being driven by computer graphics hardware. It is a vast and recently developed area of computer science. The phrase was coined in 1960 by computer graphics researchers Verne Hudson and William Fetter of Boeing. It is often abbreviated as CG, or typically in the context of film as computer generated imagery (CGI). The non-artistic aspects of computer graphics are the subject of computer science research.
The Nantes Planetarium is a public planetarium that opened on 18 June 1981. It operates as an auditorium that presents astronomy shows for all audiences.
Digital Universe Atlas is a free open source software planetarium application, available under the terms of the Illinois Open Source License, and running on Linux, Windows, macOS, AmigaOS 4, and IRIX.
The Herrett Center for Arts and Science, located on the main campus of the College of Southern Idaho in Twin Falls, Idaho, United States, is a museum of anthropology, natural history, astronomy, and art. The museum's collections primarily comprise anthropological artifacts and natural history specimens from the Americas, as well as works of local artists. The Center also houses the Faulkner Planetarium, the Centennial Observatory, a museum store, and a 2900 square foot multi-purpose event space.
Abrams Planetarium is the planetarium on the campus of Michigan State University, Michigan, United States.
The John C. Wells Planetarium is located on the campus of James Madison University in Harrisonburg, Virginia. The planetarium first opened at JMU in 1956 under the direction of Dr. John C. Wells, head of the Physics Department. The facility was then moved to Miller Hall and renovated in 1975, later named in honor of Wells on the occasion of his retirement in 1980.
The Shaded Picture System was a 3D raster computer display processor introduced by Evans & Sutherland in October 1973.
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US$9.359 million (2020)
