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Standard Test Image
A standard test image is a digital image file used across different institutions to test image processing and image compression algorithms. By using the same standard test images, different labs are able to compare results, both visually and quantitatively. The images are in many cases chosen to represent natural or typical images that a class of processing techniques would need to deal with. Other test images are chosen because they present a range of challenges to image reconstruction algorithms, such as the reproduction of fine detail and textures, sharp transitions and edges, and uniform regions. Historical origins Test images as transmission system calibration material probably date back to the original Paris to Lyon fax link. Analogue Fax equipment (and photographic equipment for the printing trade) were the largest user groups of the standardized image for calibration technology until the coming of television and digital image transmission systems. Common test image r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SIPI Jelly Beans 4
Sipi or SIPI may refer to: * Sipí, a municipality and town in the Chocó Department, Colombia * ''Sipi'' (film), a Ugandan film * Southwestern Indian Polytechnic Institute Southwestern Indian Polytechnic Institute (SIPI) is a public tribal land-grant community college in unincorporated Bernalillo County, New Mexico, with an Albuquerque postal address. It is federally operated by the Bureau of Indian Affairs and fund ..., a community college in Albuquerque, New Mexico * Sipi, mutton flaps, an inexpensive cut of meat from a sheep See also * Sippi {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carole Hersee
Carole Hersee (born 25 November 1958) is an English costume designer who is best known for appearing in the centrepiece of the United Kingdom television Test Card F (and latterly J, W, and X), which aired on BBC Television from 1967 to 1998. As such, she became the most aired face in British television history. Test Card F The card was developed in 1967 by her father, BBC engineer George Hersee, who started by snapping test photographs of Carole and her younger sister, Gillian; Carole was ultimately chosen to appear on the card simply because Gillian was without two of her front teeth at the time. – ''The Independent'', 27 May 2007 She was posed with a strategically placed Noughts and Crosses board (the "X" painted in the left centre square was directly in the middle of the screen) and her own clown doll named Bubbles, which was brought on set specifically for the photo shoot. She was paid £100 for the shoot. The card (actually a 35mm transparency) was used on televisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable Network Graphics
Portable Network Graphics (PNG, officially pronounced , colloquially pronounced ) is a raster-graphics file format that supports lossless data compression. 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". 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 full-color non-palette-based RGB or RGBA images. The PNG working group designed the format for transferring images on the Internet, not for professional-quality print graphics; therefore non-RGB color spaces such as CMYK are not supported. A PNG file contains a single image in an extensible structure of ''chunks'', encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083. PNG files use the file extension PNG or pn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rensselaer Polytechnic Institute
Rensselaer Polytechnic Institute () (RPI) is a private research university in Troy, New York, with an additional campus in Hartford, Connecticut. A third campus in Groton, Connecticut closed in 2018. RPI was established in 1824 by Stephen Van Rensselaer and Amos Eaton for the "application of science to the common purposes of life" and is the oldest technological university in the English-speaking world and the Western Hemisphere. Built on a hillside, RPI's campus overlooks the city of Troy and the Hudson River, and is a blend of traditional and modern architecture. The institute operates an on‑campus business incubator and the Rensselaer Technology Park. RPI is organized into six main schools which contain 37 departments, with emphasis on science and technology. It is classified among "R1: Doctoral Universities: Very High Research Activity" and many of its engineering programs are highly ranked. As of 2017, RPI's faculty and alumni included 6 members of the National I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Reading
The University of Reading is a public university in Reading, Berkshire, England. It was founded in 1892 as University College, Reading, a University of Oxford extension college. The institution received the power to grant its own degrees in 1926 by royal charter from King George V and was the only university to receive such a charter between the two world wars. The university is usually categorised as a red brick university, reflecting its original foundation in the 19th century. Reading has four major campuses. In the United Kingdom, the campuses on London Road and Whiteknights are based in the town of Reading itself, and Greenlands is based on the banks of the River Thames in Buckinghamshire. It also has a campus in Iskandar Puteri, Malaysia. The university has been arranged into 16 academic schools since 2016. The annual income of the institution for 2016–17 was £275.3 million of which £35.4 million was from research grants and contracts, with an expenditur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Common 3D Test Models
This is a list of models and meshes commonly used in 3D computer graphics for testing and demonstrating rendering algorithms and visual effects. Their use is important for comparing results, similar to the way standard test images are used in image processing. Modelled Designed using CAD software; sorted by year of modelling. Scanned Includes photogrammetric methods; sorted by year of scanning. Gallery Notes See also *Standard test image, a digital image file to test image processing and compression * Catmull's hand, one of the original 3D models * Sutherland's Volkswagen, another early 3D model References External links {{commons category, 3D test models ; Standard test models The Stanford 3D Scanning Repositoryhosted by the Stanford University Large Geometric Models Archivehosted by the Georgia Institute of Technology ; Other repositories The Utah 3D Animation Repository a small collection of animated 3D models scene collection by Physically Based Ren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lenna
Lenna (or Lena) is a standard test image used in the field of image processing since 1973. It is a picture of the Swedish model Lena Forsén, shot by photographer Dwight Hooker, cropped from the centerfold of the November 1972 issue of ''Playboy'' magazine. The continued use of the image has attracted controversy, on both technical and social grounds, and many journals have discouraged or banned its use. Forsén herself has asked for the image to be retired. The spelling "Lenna" came from the model's desire to encourage the proper pronunciation of her name. "I didn't want to be called ''Lee''na []," she explained. IPA pronunciation of ''Lee''na inserted into the quotation in brackets for clarity. is a common English pronunciation of the name ''Lena''. The quotation reads, "At her suggestion, the editors f Playboyspelled her first name with an extra 'n,' to encourage proper pronunciation. 'I didn't want to be called Leena," she explained.' History Before Lenna, the fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FERET Database
The Facial Recognition Technology (FERET) database is a dataset used for facial recognition system evaluation as part of the Face Recognition Technology (FERET) program. It was first established in 1993 under a collaborative effort between Dr. Harry Wechsler at George Mason University and Dr. Jonathan Phillips at the Army Research Laboratory in Adelphi, Maryland. The FERET database serves as a standard database of facial images for researchers to use to develop various algorithms and report results. The use of a common database also allowed one to compare the effectiveness of different approaches in methodology and gauge their strengths and weaknesses. The facial images for the database were collected between December 1993 and August 1996, accumulating a total of 14,126 images pertaining to 1199 individuals along with 365 duplicate sets of images that were taken on a different day. In 2003, the Defense Advanced Research Projects Agency (DARPA) released a high-resolution, 24-bit col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photo CD
Photo CD is a system designed by Kodak for digitizing and saving photos onto a CD. Launched in 1991, the discs were designed to hold nearly 100 high quality images, scanned prints and slides using special proprietary encoding. Photo CDs are defined in the Beige Book and conform to the CD-ROM XA and CD-i Bridge specifications as well. They were intended to play on CD-i players, Photo CD players ( Apple's PowerCD for example), and any computer with a suitable software ( LaserSoft Imaging's SilverFast DC or HDR for example). The system failed to gain mass usage among consumers partly due to its proprietary nature, the rapidly decreasing scanner prices, and the lack of CD-ROM drives in most home personal computers of the day. Furthermore, Photo CD relied on CRT-based TV sets for home use. However, these were designed for moving pictures. Their typical flicker became an issue when watching still photographs. The Photo CD system gained a fair level of acceptance among profession ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Image Processing
An image is a visual representation of something. It can be two-dimensional, three-dimensional, or somehow otherwise feed into the visual system to convey information. An image can be an artifact, such as a photograph or other two-dimensional picture, that resembles a subject. In the context of signal processing, an image is a distributed amplitude of color(s). In optics, the term “image” may refer specifically to a 2D image. An image does not have to use the entire visual system to be a visual representation. A popular example of this is of a greyscale image, which uses the visual system's sensitivity to brightness across all wavelengths, without taking into account different colors. A black and white visual representation of something is still an image, even though it does not make full use of the visual system's capabilities. Images are typically still, but in some cases can be moving or animated. Characteristics Images may be two or three-dimensional, such as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable Network Graphics
Portable Network Graphics (PNG, officially pronounced , colloquially pronounced ) is a raster-graphics file format that supports lossless data compression. 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". 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 full-color non-palette-based RGB or RGBA images. The PNG working group designed the format for transferring images on the Internet, not for professional-quality print graphics; therefore non-RGB color spaces such as CMYK are not supported. A PNG file contains a single image in an extensible structure of ''chunks'', encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083. PNG files use the file extension PNG or pn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kodak
The Eastman Kodak Company (referred to simply as Kodak ) is an American public company that produces various products related to its historic basis in analogue photography. The company is headquartered in Rochester, New York, and is incorporated in New Jersey. Kodak provides packaging, functional printing, graphic communications, and professional services for businesses around the world. Its main business segments are Print Systems, Enterprise Inkjet Systems, Micro 3D Printing and Packaging, Software and Solutions, and Consumer and Film. It is best known for photographic film products. Kodak was founded by George Eastman and Henry A. Strong on May 23, 1892. During most of the 20th century, Kodak held a dominant position in photographic film. The company's ubiquity was such that its " Kodak moment" tagline entered the common lexicon to describe a personal event that deserved to be recorded for posterity. Kodak began to struggle financially in the late 1990s, as a result o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
