PPT-Shading

Surface can either both Emit light Eg light bult Reflect light Eg Mirror Shading Rendering equation Cannot solved in general Even by numerical method Shading Approximation of rendering equation. for Power-Efficient Rendering on High Pixel-Density Displays. Pavlos . Mavridis. Georgios . Papaioannou. Department of Informatics, Athens University of Economics & Business. Motivation. Warm ups / Shading. 3/16/15 What elements . of . art is illustrated here?. 3/17/15 Copy the sphere below with arrowed terms.. 3/18/15 . Identifying the arrowed area.. 1. 2. 3. 4. 5. 3/19/15. Name the four shading techniques.. Mica . Arie-Nachimson. May 2011. What is Shading?. Well… not shadow…. We can’t reconstruct shape from one shadow…. Image from www.moolf.com. What is Shading?. Variable levels of darkness. Gives a . Object rendering. INTRODUCTION. Lighting in computer graphics refers to the placement of lights in a scene to achieve some desired effect.. Lighting is very important part of an image synthesis.. It is used to create 3D effect by separating foreground from background.. (* But Were Afraid to Ask). Zap Andersson, Autodesk Inc.. Background. Zap Andersson. 2011-present: Autodesk Inc. 2004-2011: mental images GmbH . (= NVidia Advanced Rendering Center). 1989-2003: . Various. FaceWorks. Nathan Reed — . NVIDIA. March 24, 2014. Digital Ira. Tech demo. Collaboration with Dr. Paul Debevec at USC. Lots of other inspiring work on skin & eyes. [Penner10], [Jimenez12], [Jimenez13]. Behaviour of light. Shading Overview. Classical real-time shading:. vertices projected to screen. lighting calculation done at each vertex. results interpolated . along line (linear interpolation). to interior of polygon (bilinear interpolation). Types of pencils. 9H being the hardest lightest one and 9B the softest darkest one. Using pencils. The . H pencils . are the hardest and are good for fine details.. While the . B pencils . are the softest and are best for shading.. Converting virtual objects to pixel colors. . . Frame . Buffer: a buffer of memory to store the colors of the screen, one memory cell per pixel. . http://www.webopedia.com/TERM/F/frame_buffer.html. http://en.wikipedia.org/wiki/Framebuffer. Light Sources, Shading. , . Hatching, Crosshatching, and Stippling. Light Sources!. Shading. Hatching. Crosshatching. Stippling. Complete Worksheet. Draw a Sphere in your Sketchbook. Show your knowledge of light sources and make the object look 3-D with shading. . D. Charlie Curcija, . Steve Selkowitz, . Christian Kohler,. Robin Mitchell,. Simon . Vodanovic. ,. Stephen . Czernacki. October 4, 2016. Overview. Introduction. Current state. Version 7.5. Open Source. Shader. ?. Small program, domain-specific language. Originally to compute surface appearance and . shading. “. Shader. ” is now used for any GPU computation. History. Shade Trees [Cook 1984]. Expressions for displacement, surface, light, atmosphere. DEPARTMENT OF ARCHITECTURE,. FEDERAL UNIVERSITY OF TECHNOLOGY,. AKURE, NIGERIA. Shading . Devices. 1. Introduction.. 2. Types of shading devices.. 3. Various Shading Devices and their Geometries.. 4. Design of shading devices.. Given a compete 3D scene with viewing/lighting conditions and object geometry and material properties fully . specified. First at Vertices, then in the interior of the triangle. Shading. [cgtrader.com].