Distributed Ray Tracing

Mar 25, 2019

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Distributed Ray Tracing. Anti-Aliasing. Graphics as signal processing Scene description: continuous signal Sample digital representation Reconstruction by monitor. Anti-Aliasing. Represent any function as sum of sinusoidals Sampling Spatial: multiply function by comb function

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Distributed Ray Tracing

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Ray Tracing

Ray Tracing Rendering Methods Rays Rays for screen images Shadows Recursion Z-Buffer Rendering Objects are immediately drawn onto the screen. We use a “z-buffer” to keep track of what is in front… Object Coordinates Modelview Matrix Eye coordinates Projection Matrix

946 views • 33 slides

Ray Tracing

Ray Tracing. What is it? Why use it? Basics Advanced topics References. Ray-Tracing: Why Use It?. Simulate rays of light Produces natural lighting effects. Ray-Tracing: Why Use It?. Hard to simulate effects with rasterization techniques (OpenGL) Rasterizers require many passes

1.06k views • 50 slides

Ray-tracing

Ray-tracing. [ in Tesseral-Pro ]. www.tesseral-geo.com. Initial Model. “ 2 horizontal Layers”. Time field for Isotropic Case. Time field for Anisotropic Case. Ray-Tracing Shotgather for Isotropic Case. Ray-Tracing Shotgather for Anisotropic Case.

507 views • 9 slides

Ray Tracing

Whitted 1980. Ray Tracing. Rendering and Techniques. http://cg.alexandra.dk/2009/08/10/triers-cuda-ray-tracing-tutorial/. Polygonal Rendering. For example, OpenGl with one-polygon-at-a-time rendering using simple Phong lighting and shading models – not physically-based

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Distributed Ray Tracing Part 1

Distributed Ray Tracing Part 1. 黃聰賢. Overview. Program Framework Generate Ray Get Nearest Intersection Ray-Triangle Intersection Space Partition Ray-Box Intersection Visibility. Framework. Model view: only glLoadIdentity () Projection: use glLoadIdentity () and glOrtho (…)

327 views • 17 slides

Distributed Ray Tracing Part 2

Distributed Ray Tracing Part 2. 黃聰賢. Overview. Render Equation BRDF Importance Sampling Implementation. Rendering Equation (1). ω o. x. is the radiance from a point to given direction w o. Rendering Equation (2). ω o. x. is the emitted radiance.

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Ray Tracing

CS32310 Assignment Jacek Kruszynski (jck6). Ray Tracing. In Computer Graphics Ray Tracing is a technique devoted to generate images where light behave as naturally as possible. It is a very powerful and simple algorithm that currently is possibly most commonly used. A bstract. Introduction:

444 views • 14 slides

Ray Tracing

Ray Tracing. Trace light rays that enter eye through view-plane back from whence they came. (# rays == # pixels) Use illumination model to determine color at intersection of ray and object. Shadows “happen”. Ray Tracing. Light Source. Shadow Ray. Center of Projection. Projection Plane.

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Distributed Ray Tracing

Distributed Ray Tracing. Robert L. Cook Thomas Porter Loren Carpenter Computer Division Lucasfilm Ltd. SIGGRAPH 1984. Distributed Ray Tracing Cook-Porter-Carpenter (1984) Apply distribution-based sampling to many parts of the ray-tracing algorithm

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Distributed Ray Tracing

Distributed Ray Tracing. Robert L. Cook Thomas Porter Loren Carpenter. What is Distributed Ray Tracing?. Distributed Ray Tracing uses randomly distributed oversampling to remove the aliasing effect in the rendered image. Distributed Ray Tracing Topics. Gloss (Blurred Reflections)

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Ray Tracing

Ray Tracing. Beyond the Graphics Pipeline Ray Casting Ray-Object Intersection Global Illumination - Reflections and Transparency Acceleration Techniques CSG. Graphics Pipeline Review. Properties of the Graphics Pipeline Primitives are processed one at a time

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Ray Tracing

Ray Tracing. Chemakura , Baba Kumar Reddy. Introduction to Ray-Tracing. Ray Tracing. global illumination. purpose of Ray Tracing?. Introduction to Ray- Tracing. Basic Setup. Introduction to Ray-tracing. Modeling Rendering. Properties of Light Rays.

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Distributed Ray Tracing

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Ray Tracing

CAP4730: Computational Structures in Computer Graphics. Ray Tracing. Chapter 10.11. Outline. What is raytracing? How is raytracing different than what we’ve done before? Math behind raytracing Uses of raytracing. Forward Mapping. Forward mapping is what we are used to. Forward Mapping.

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DISTRIBUTED RAY TRACING

DISTRIBUTED RAY TRACING. some implementation notes. Theory v. practice. Brute force – multiple rays at every sampling opportunity Implementation – for each pixel subsample, randomize at each opportunity. DRT components. anti-aliasing and motion blur

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Distributed Ray Tracing

Distributed Ray Tracing. Can you get this with ray tracing?. Ray Tracing Revisited. The reflected intensity (or color) at a surface point is computed by: Local reflection model (no interaction with other objects): ambient, diffuse, and specular.

354 views • 33 slides

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