Computer Graphics : Part 2

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^)/