ray tracing - definição. O que é ray tracing. Significado, conceito
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O que (quem) é ray tracing - definição


ray tracing         
WIKIMEDIA DISAMBIGUATION PAGE
Raytracing; Ray Tracing; Ray-tracing; Ray tracing (disambiguation)
<graphics> A technique used in computer graphics to create realistic images by calculating the paths taken by rays of light entering the observer's eye at different angles. The paths are traced backward from the viewpoint, through a point (a pixel) in the image plane until they hit some object in the scene or go off to infinity. Objects are modelled as collections of abutting surfaces which may be rectangles, triangles, or more complicated shapes such as 3D splines. The optical properties of different surfaces (colour, reflectance, transmitance, refraction, texture) also affect how it will contribute to the colour and brightness of the ray. The position, colour, and brightness of light sources, including ambient lighting, is also taken into account. Ray tracing is an ideal application for parallel processing since there are many pixels, each of whose values is independent and can thus be calculated in parallel. Compare: radiosity. Usenet newsgroup: news:comp.graphics.raytracing. http://directory.google.com/Top/Computers/Software/Graphics/3D/Ray_Tracing/. (2003-09-11)
Ray tracing         
WIKIMEDIA DISAMBIGUATION PAGE
Raytracing; Ray Tracing; Ray-tracing; Ray tracing (disambiguation)
Ray tracing is a method for calculating the path of waves or particles through a system. The method is practiced in two distinct forms:
Ray tracing (graphics)         
  • "Draughtsman Making a Perspective Drawing of a Reclining Woman" by Albrecht Dürer, possibly from 1532, shows a man using a grid layout to create an image. The German renaissance artist is credited with first describing the technique.
  • effects of a camera]] due to [[depth of field]] and [[aperture]] shape (in this case a [[hexagon]]).
  • Flip book created in 1976 at Caltech
  • caustics]] are visible. (Image created with [[V-Ray]].)
  • Ray tracing can create photorealistic images.
  • Image showing recursively generated rays from the "eye" (and through an image plane) to a light source after encountering two [[diffuse surface]]s
  • Dürer woodcut of Jacob de Keyser's invention. With de Keyser's device, the artist's viewpoint was fixed by an eye hook inserted in the wall. This was joined by a silk string to a gun-sight style instrument, with a pointed vertical element at the front and a peephole at the back. The artist aimed at the object and traced its outline on the glass, keeping the eyepiece aligned with the string to maintain the correct angle of vision.
  • Cobalt]].)
  • Illustration of the ray-tracing algorithm for one pixel (up to the first bounce)
  • The ray-tracing algorithm builds an image by extending rays into a scene and bouncing them off surfaces and towards sources of light to approximate the color value of pixels.
  • Viewport schema witch pixels, eye E and target T, viewport center C
  • Visualization of SDF ray marching algorithm
RENDERING ALGORITHM THAT WORKS BY SENDING OUT MANY VIRTUAL RAYS OF LIGHT
Ray tracer; Raytracer; Raytrace; Ray trace; Ray-tracer; Ray-trace; Ray Trace; Backwards ray tracing; Ray-tracing (graphics); Ray traced graphics; Raytracing (graphics); Real-time ray tracing; RTRT; Bidirectional path tracing; Algorithms for ray tracing; Real-time raytracing; History of ray tracing; Interactive raytracing; Computational complexity of ray tracing
In 3D computer graphics, ray tracing is a technique for modeling light transport for use in a wide variety of rendering algorithms for generating digital images.

Wikipédia

Ray tracing
Ray tracing is a method for calculating the path of waves or particles through a system. The method is practiced in two distinct forms: