1 / 12

CS 4731: Computer Graphics Final review

This review session will cover lectures 13-24, focusing on theoretical concepts, mathematics, algorithms, programming, and OpenGL knowledge. The exam will test understanding of concepts, programming skills, and completion of projects.

jirving
Download Presentation

CS 4731: Computer Graphics Final review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CS 4731: Computer GraphicsFinal review Emmanuel Agu

  2. Exam Overview • Thursday, Oct. 16, in-class • Will cover lectures 13-24 (12 lectures) • Can bring: • One page cheat-sheet • Calculator • Will test: • Theoretical concepts • Mathematics • Algorithms • Programming • OpenGL knowledge (program structure and some commands)

  3. What really am I Testing? • Understanding of on concepts (NOT only programming) • That you can plug in numbers by hand to check your programs • Understanding of programming (pseudocode/syntax) • That you did the projects • That you understand what you did in projects

  4. General Advise • Read your projects and refresh memory of what you did • Read the slides: worst case – if you understand slides, you’re more than 50% prepared • I’ve placed actual .ppt slides on web to make it clearer • Focus on Mathematical results, concepts, algorithms • Plug numbers: calculate by hand • Midterm was calculation-intensive, final exam more algorithmic • Should be able to predict subtle changes to algorithm.. What ifs?.. • Past exams: my exams will be most similar to last year’s exam • Every lecture has references. Look at refs to focus reading

  5. Grading Policy • Will still do ALL grading myself • Give you all the points, take away only what I have to • In time constraints, laying out outline of solution gets you healthy chunk of points • Try to write something for each question

  6. General Notes! • This exam is more algorithmic than first • Need to read and understand subtleties of algorithm • Some concepts permeate multiple topics • E.g. Interpolation • Make sure you know those topics

  7. Projection matrices • Projection matrices • Perspective projection • Orthographic projection • How to derive them, plug numbers • If parameters changed, how would derivations change?

  8. 3D clipping, viewport transf, illumination • 3D clipping (Liang-Barsky algorithm) • Viewport transformation in 3D • Illumination models • Light types (point, extended, etc) • Global vs local illumination • Ambient, diffuse, specular • Phong light model • OpenGL lighting, material commands • Shading (flat, gouraud, phong, etc)

  9. Texturing, HSR, Shadows • Texturing • Flat, curved surface • OpenGL texturing commands • Hidden surface removal • Z-buffer • OpenGL HSR commands • Others (painters algorithm, backface culling, etc) • Shadows • Shadows as texture (projection) • Shadow buffer approach • Umbra, penumbra

  10. Raster graphics • Raster graphics • Pixel manipulation • RGBpixmap class • Image manipulation (dissolve, alpha blending, etc) • Line drawing (simple DDA, Bresenham’s algorithm) • Filling pixel regions (recursive fill, using coherence, etc) • Polygon-defined regions • Antialiasing (prefiltering, supersampling, openGL, etc)

  11. Curves, Color • Curves • Representations (implicit, explicit, parametric, etc) • Continuity • Interactive curve design (interpolation, etc) • De Casteljau algorithm • Bezier curves, B-splines, NURBs • Color • Hue, saturation, wavelengths, etc • The eye, cones, tristimulus theory, etc • Color spaces (CIE, RGB, HSV, etc) • Color quantization, gamma correction, device color gamuts

  12. Final Words • You’ve all worked very hard • Graphics is a hard topic… • Symptoms of hardness: • No book does good job explaining all topics • Professor is a slave driver, tough to understand • TA’s don’t help enough • Friends can’t help much either • Hopefully, you’ve learned a lot • If you’ve worked hard, tried, I will curve to make you pass • If you’re doing well, finish strong!! • Good luck!

More Related