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Light Stage
A light stage or light cage is equipment used for shape, texture, reflectance and motion capture often with structured light and a multi-camera setup. Reflectance capture The reflectance field over a human face was first captured in 1999 by Paul Debevec, Tim Hawkins et al and presented in SIGGRAPH 2000. The method they used to find the light that travels under the skin was based on the existing scientific knowledge that light reflecting off the air-to-oil retains its polarization while light that travels under the skin loses its polarization. Using this information, a light stage was built by Debevec et al., consisting of # Moveable digital camera # Moveable simple light source (full rotation with adjustable radius and height) # Two polarizers set into various angles in front of the light and the camera # A computer with relatively simple programs doing relatively simple tasks. The setup enabled the team to find the subsurface scattering component of the bidirectio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Source
Light or visible light is electromagnetic radiation that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), corresponding to frequencies of 750–420 terahertz, between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). In physics, the term "light" may refer more broadly to electromagnetic radiation of any wavelength, whether visible or not. In this sense, gamma rays, X-rays, microwaves and radio waves are also light. The primary properties of light are intensity, propagation direction, frequency or wavelength spectrum and polarization. Its speed in a vacuum, 299 792 458 metres a second (m/s), is one of the fundamental constants of nature. Like all types of electromagnetic radiation, visible light propagates by massless elementary particles called photons that represents the quanta of electromagnetic field, and can be analyzed as both waves and partic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imaging Technology
Imaging is the representation or reproduction of an object's form; especially a visual representation (i.e., the formation of an image). Imaging technology is the application of materials and methods to create, preserve, or duplicate images. Imaging science is a multidisciplinary field concerned with the generation, collection, duplication, analysis, modification, and visualization of images,Joseph P. Hornak, ''Encyclopedia of Imaging Science and Technology'' (John Wiley & Sons, 2002) including imaging things that the human eye cannot detect. As an evolving field it includes research and researchers from physics, mathematics, electrical engineering, computer vision, computer science, and perceptual psychology. ''Imager'' are imaging sensors. Imaging chain The foundation of imaging science as a discipline is the "imaging chain" – a conceptual model describing all of the factors which must be considered when developing a system for creating visual renderings (images). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Image Synthesis
Human image synthesis is technology that can be applied to make believable and even photorealistic renditions of human-likenesses, moving or still. It has effectively existed since the early 2000s. Many films using computer generated imagery have featured synthetic images of human-like characters digitally composited onto the real or other simulated film material. Towards the end of the 2010s deep learning artificial intelligence has been applied to synthesize images and video that look like humans, without need for human assistance, once the training phase has been completed, whereas the old school 7D-route required massive amounts of human work. Timeline of human image synthesis * In 1971 Henri Gouraud made the first CG geometry capture and representation of a human face. Modeling was his wife Sylvie Gouraud. The 3D model was a simple wire-frame model and he applied the Gouraud shader he is most known for to produce the first known representation of human-likeness on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barack Obama
Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, Obama was the first African-American president of the United States. He previously served as a U.S. senator from Illinois from 2005 to 2008 and as an Illinois state senator from 1997 to 2004, and previously worked as a civil rights lawyer before entering politics. Obama was born in Honolulu, Hawaii. After graduating from Columbia University in 1983, he worked as a community organizer in Chicago. In 1988, he enrolled in Harvard Law School, where he was the first black president of the ''Harvard Law Review''. After graduating, he became a civil rights attorney and an academic, teaching constitutional law at the University of Chicago Law School from 1992 to 2004. Turning to elective politics, he represented the 13th district in the Illinois Senate from 1997 until 2004, when he ran for the U. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institute For Creative Technologies
An institute is an organisational body created for a certain purpose. They are often research organisations (research institutes) created to do research on specific topics, or can also be a professional body. In some countries, institutes can be part of a university or other institutions of higher education, either as a group of departments or an autonomous educational institution without a traditional university status such as a "university institute" (see Institute of Technology). In some countries, such as South Korea and India, private schools are sometimes referred to as institutes, and in Spain, secondary schools are referred to as institutes. Historically, in some countries institutes were educational units imparting vocational training and often incorporating libraries, also known as mechanics' institutes. The word "institute" comes from a Latin word ''institutum'' meaning "facility" or "habit"; from ''instituere'' meaning "build", "create", "raise" or "educate". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Southern California
, mottoeng = "Let whoever earns the palm bear it" , religious_affiliation = Nonsectarian—historically Methodist , established = , accreditation = WSCUC , type = Private research university , academic_affiliations = , endowment = $8.12 billion (2021)As of June 30, 2021. , budget = $6.2 billion (2020–21) , president = Carol Folt , students = 49,318 (2021) , undergrad = 20,790 (2021) , postgrad = 28,528 (2021) , faculty = 4,706 (2021) , administrative_staff = 16,614 (2021) , city = , state = , country = United States , campus = Large City University Park campus, Heal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Matrix Revolutions
''The Matrix Revolutions'' is a 2003 American science fiction action film written and directed by the Wachowskis. It is the third installment in ''The Matrix'' film series, released six months following ''The Matrix Reloaded''. The film stars Keanu Reeves, Laurence Fishburne, Carrie-Anne Moss, Hugo Weaving and Jada Pinkett Smith. The film was released simultaneously in 108 territories on November 5, 2003, by Warner Bros. Pictures. While being the final entry in the original trilogy of the series, the ''Matrix'' storyline was continued in ''The Matrix Online'' video game. It was the first live-action feature film to be released in both regular and IMAX theaters at the same time. Despite receiving mixed reviews from critics, the film grossed $427.3 million worldwide. A fourth film, titled ''The Matrix Resurrections'', began production in February 2020, and was released on December 22, 2021. Plot Picking up immediately where ''Reloaded'' ended, Neo and Bane still lie unconsci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Matrix Reloaded
''The Matrix Reloaded'' is a 2003 American science-fiction action film written and directed by the Wachowskis. It is a sequel to '' The Matrix'' (1999) and the second installment in the ''Matrix'' film series. The film stars Keanu Reeves, Laurence Fishburne, Carrie-Anne Moss, Hugo Weaving and Gloria Foster who reprise their roles from the previous film, while Jada Pinkett Smith was introduced in the cast. The film premiered on May 7, 2003, in Westwood, Los Angeles, California, and had its worldwide release by Warner Bros. Pictures on May 15, 2003, including a screening out of competition at the 2003 Cannes Film Festival. The video game '' Enter the Matrix'' and '' The Animatrix'', a collection of short animations, supported and expanded the film's story. The film received generally positive reviews from critics, although most felt it inferior to the first film. It grossed $741.8 million worldwide, breaking '' Terminator 2: Judgment Day''s record and becoming the highest-gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Cinematography
Virtual cinematography is the set of cinematographic techniques performed in a computer graphics environment. It includes a wide variety of subjects like photographing real objects, often with stereo or multi-camera setup, for the purpose of recreating them as three-dimensional objects and algorithms for the automated creation of real and simulated camera angles. Virtual cinematography can be used to shoot scenes from otherwise impossible camera angles, create the photography of animated films, and manipulate the appearance of computer-generated effects.Virtual cinematography is the set of cinematographic techniques performed in a computer graphics environment History Early stages An early example of a film integrating a virtual environment is the 1998 film, ''What Dreams May Come'', starring Robin Williams. The film's special effects team used actual building blueprints to generate scale wireframe models that were then used to generate the virtual world. The film went on to g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bidirectional Scattering Distribution Function
The definition of the BSDF (bidirectional scattering distribution function) is not well standardized. The term was probably introduced in 1980 by Bartell, Dereniak, and Wolfe. Most often it is used to name the general mathematical function which describes the way in which the light is scattered by a surface. However, in practice, this phenomenon is usually split into the reflected and transmitted components, which are then treated separately as BRDF (bidirectional reflectance distribution function) and BTDF (bidirectional transmittance distribution function). * BSDF is a superset and the generalization of the BRDF and BTDF. The concept behind all BxDF functions could be described as a black box with the inputs being any two angles, one for incoming (incident) ray and the second one for the outgoing (reflected or transmitted) ray at a given point of the surface. The output of this black box is the value defining the ratio between the incoming and the outgoing light energy for the g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angle
In Euclidean geometry, an angle is the figure formed by two rays, called the '' sides'' of the angle, sharing a common endpoint, called the '' vertex'' of the angle. Angles formed by two rays lie in the plane that contains the rays. Angles are also formed by the intersection of two planes. These are called dihedral angles. Two intersecting curves may also define an angle, which is the angle of the rays lying tangent to the respective curves at their point of intersection. ''Angle'' is also used to designate the measure of an angle or of a rotation. This measure is the ratio of the length of a circular arc to its radius. In the case of a geometric angle, the arc is centered at the vertex and delimited by the sides. In the case of a rotation, the arc is centered at the center of the rotation and delimited by any other point and its image by the rotation. History and etymology The word ''angle'' comes from the Latin word ''angulus'', meaning "corner"; cognate words are the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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