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A quincunx is the arrangement of five units in the pattern corresponding to the ... The spots on 5th side of a dice form a quincunx. ...
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Normal, Texture, Supersampling Exercises - Marcus Magnor ... Invertible if points are non-collinear. Computer Graphics WS05/06 Supersampling Exercises ...
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Passes infinitely high frequencies. Attenuates desired frequencies. 38. Supersampling ... 'Average down' means multiply by low-pass function in frequency domain ...
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Additional s for October 23 lecture. Analytical polygon ... Siggraph 80) Stochastic supersampling (Jim Kajiya, Siggraph 86) Adaptive regular sampling ...
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Dino. Model. Timings. Rendering time per frame (in milliseconds) ... Dino. Model. Pentium III 800Mhz, GeForce2. Comparison with Supersampling. Original. 2x2 ...
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Before sampling the image, use a low-pass filter to eliminate frequencies above ... Badly inflates storage requirements. Supersampling pros. Relatively easy ...
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Obtain intensity information from multiple points that ... Run Bresenham's algorithm on microgrid. Set pixel intensities. SuperSampling. Plot (0,0 to 2,1) ...
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The sampling and reconstruction process Real world: continuous Digital world: discrete Basic signal processing Fourier transforms The convolution theorem
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The sampling and reconstruction process Real world: continuous Digital world: discrete Basic signal processing Fourier transforms The convolution theorem
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This week as normal lectures today and tomorrow, tutorial tomorrow, lab ... of techniques which attempt to remove or mitigate the jagged effect of aliasing. ...
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Computer representations of the physical world are often a ... Bump mapping. Texture mapping. Reflection mapping. Next Lecture. Putting it all back together...
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Anti-aliasing. Chris Handley. COSC326 Lecture 20. 2. What is going on here? COSC326 ... Can think of area sampling (box filter) as using a cube as the function. ...
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Anisotropy of the sampling grid. More vertical and horizontal bandwidth ... noise and good (lack of) anisotropy. Adaptive sampling. Focus computation where ...
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Title: Board of Directors Meeting Author: Karan Singh Last modified by: neff Created Date: 4/17/1999 10:24:30 PM Document presentation format: On-screen Show
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Note that our method based on line antialising, shown on the right, does a better job hiding those evil jaggies. So here are a couple of demos of edge overdraw.
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CAP4730: Computational Structures in Computer Graphics Antialiasing Outline What is antialiasing? How do we see the affects of antialiasing? What can we do about it?
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... Screenshot mit 8 fachem Anisotopischen Filtering Kantengl ttung Screenshot ohne Antialising Screenshot mit 4 fachem Antialising Grafikchip Hersteller ...
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Special Effects Realistischeres Rendern einer Scene Special Effects Heutige Themen: Partikelsysteme Motion Blur Tiefensch rfe Lens Flares Antialiasing ...
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Output Primitive Contents Points Lines DDA Algorithm Bresenham s Algorithm Polygons Scan-Line Polygon Fill Inside ...
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Radially symmetric BRDFs. Lambertian: Blinn-Phong: Torrance ... Radially symmetric. more concentrated. less concentrated. Mixtures of vMFs. NDF. number of vMFs ...
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Antialiasing with Line Samples Thouis R. Jones, Ronald N. Perry MERL - Mitsubishi Electric Research Laboratory Antialiasing Fundamentally a sampled convolution ...
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Finest-level NDFs are delta functions, so: Use standard linear filtering ... Pat Hanrahan, Shree Nayar, Evgueni Parilov, Makiko Yasui, Denis Zorin, and nVidia. ...
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Antialiasing CS 319 Advanced Topics in Computer Graphics John C. Hart * * * * * * * Summed Area Table Frank Crow, 1984 Replaces texture map with summed-area texture ...
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Create a pyramid of texture maps. Each level doubles filter size. David Luebke 1/19/99 ... Every ray hit deposits some of its energy into surface's illumination map ...
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Visualization Week 11, Fri Mar 30 http://www.ugrad.cs.ubc.ca/~cs314/Vjan2007
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Color Color Admin Final project due this Friday If you aren t well advanced yet, time to freak out Don t forget the final report (~1000 words) Submit code ...
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Computer Animation Algorithms and Techniques Interpolating Values Bezier construction using quaternion operators Need quaternion-friendly operations to interpolate ...
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Attribute 'cull' 'hidden' 0. to disable bouding of viewing volume/frustrum ... Occlusion Culling. Reyes: Shading. Shading before Hiding. Parallel Shading. Antialiasing ...
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Distributed Ray Tracing CIS 681 CIS 681 Anti-Aliasing Graphics as signal processing Scene description: continuous signal Sample digital representation Reconstruction ...
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Line and Curve Drawing Algorithms. Line Drawing. y = m . x b. m ... Calculate next points and plot in each octant. */ while (circPt.x circPt.y) { circPt.x ...
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Solution: Discard intersections with horizontal edges and with upper endpoint of any edge Antialiasing Raster displays have pixels as rectangles Aliasing: ...
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Title: Richieste EPSI-PG 2003 Author: Patrizia Cenci Last modified by: cenci Created Date: 11/16/1999 9:03:01 PM Document presentation format: Presentazione su schermo
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Audio. 44/48 Khz signal. 11 Khz Sample. What is the result? Images. 8 MP vs 4 MP vs 640 x 480 ... In the frequency domain we get: ...
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In general, the Fourier transform is just a change of basis ... Ringing artifacts if prefiltering or supports are not perfect. MIT EECS 6.837 ...
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Information Visualization I/II Week 5, Thu Jun 9 http://www.ugrad.cs.ubc.ca/~cs314/Vmay2005
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Volume clipping (Weiskopf VIS 02) What is missing? From a medical point of view: ... Iso surface for C=0.5 defines clip geometry ...
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Duality. The concept: we can map between different ways of ... A duality transform is a mapping which takes an element e in the primal plane to ... Duality ...
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An artifact (loss of detail and false details) Caused by ... Oblique lines 'jagged' How can we compensate? 7. 7. 7. CS-321. Dr. Mark L. Hornick. 7 ...
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Title: NSF CARGO: Multi-scale Topological Analysis of Deforming Shapes APES (Analysis and Parameterization of Evolving Shapes) Author: george burdell
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2001 ACM Symposium on Interactive 3D Graphics Discontinuity Edge Overdraw Pedro V. Sander1 Hugues Hoppe2 John Snyder2 Steven J. Gortler1 1 Harvard University 2 ...
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Title: PowerPoint Presentation Author: Gerald Silverberg Last modified by: Gerald Silverberg Created Date: 3/18/2002 6:10:53 PM Document presentation format
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Fast Depth-of-Field Rendering with Surface Splatting Jaroslav K iv nek CTU Prague IRISA INRIA Rennes Ji ra CTU Prague Kadi Bouatouch
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Mon, November 1, 7-9 pm, Gates B01. Mostly 'short answer' questions ... Duality: F(x)*G(x) = F(w)G(w) Sampling and Antialiasing. Prefiltering vs. postfiltering ...
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CMSC 635 Graphics Hardware (Josh Barczak) GPU Performance Tips Pixel Processing Small triangles hurt performance 2x2 pixel quads Waste at edge pixels Respect the ...
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Introduction to 2D and 3D Computer Graphics Emphasizing both 2D and 3D Computer Graphics Karla Steinbrugge Fant Notes: A more practical approach is weighted area ...
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Level of Detail (How to make games run fast and look good) UKZN Graphics & Modelling 2006 ... Nearest texel leads to pixelation and jagged edges. ...
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H. Pfister, J. Hardenbergh, J. Knittel, H. Lauer, and L. Seiler, The VolumePro ... Also. Vizard and Vizard 2 systems from Tuebingen. FPGA based ...
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Title: Introduction to Computer Graphics CS 445 / 645 Author: David Brogan Last modified by: Cengiz Gungor Created Date: 8/29/2002 6:32:11 PM Document presentation format
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... errors (called artefacts) are: jagged profiles, disappearing or improper fine ... Jagged Profiles. Loss of Detail. 9/12/09. Advanced Computer Graphics. 5 ...
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Fast Scene Voxelization and its Applications
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How does a machine go about drawing a line defined by a mathematical ... In raster images leads to jagged edges with staircase effect ...
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plus taxonomy from start of last lecture. Review session s available ... Flicker (50-70Hz) Perceived motion. 12 Hz = cartoons, 24 Hz = film, 60 Hz = video ...
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Are Points the Ultimate Modeling Primitive
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Spinning fan test image. Jittered sampling ( xi, yi ) in grid ( j, k ) ... Spinning-Fan Test Image. Hilbert-Curve Order. Interleaved j, j k. Error in 16-Sample ...
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Histogram Analysis to Choose the Number of Clusters for K Means. By: Matthew Fawcett. Dept. of Computer Science and Engineering. University of South Carolina ...
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Image restoration and segmentation by convolutional networks Sebastian Seung Howard Hughes Medical Institute and MIT Outline Convolutional networks Connectomics ...
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