Computer Graphics : Intro

Transcript

1. Computer Graphics: Overview

2. What is computer graphics? • Representation and display of image

   data • Concerned with mathematical and computational aspects of displaying and representing images • Not concerned with design/aesthetics

3. 3D Modelling • Mathematical representation of 3D surface • Polygonal

   modelling: Mesh • Curve modelling: NURBS

4. Wireframe model

5. NURBS surface

6. 3D Rendering • Displaying a model (or collection of models)

   • Real-time/Non real-time

7. The Graphics Pipeline • Vertex transformation: Translation, rotation, scaling, projection

   • Clipping and rasterization, hidden surface detection • Per-pixel operations: Lighting, texture mapping • Display finished frame

8. Transformation matrices

9. Illumination

10. Texture mapping

11. The Role of the Graphics card • GPU and RAM

    • Used for hardware accelerated graphics computations

12. The Graphics Processing Unit • Implements the graphics pipeline in

    hardware • Performs vector and matrix operations, clipping, interpolation, rasterization and more • Can simultaneously perform many computations

13. Video Memory

14. The Graphics Pipeline

15. APIs: OpenGL and Direct3D • Used to command the graphics

    card • Configure graphics pipeline, copy data to video memory, load and run shaders • Low-level

16. Thank you \(^o^)/