Computer Graphics : Part 2

Transcript

1. Computer Graphics: Overview
   

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2. What is computer graphics?
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   Representation and display of image data
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   Concerned with mathematical and computational
   aspects of displaying and representing images
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   Not concerned with design/aesthetics
   

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3. 3D Modelling
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   Mathematical representation of 3D surface
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   Polygonal modelling: Mesh
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   Curve modelling: NURBS
   

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4. Wireframe model
   

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5. NURBS surface
   

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6. 3D Rendering
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   Displaying a model (or collection of models)
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   Real-time/Non real-time
   

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7. The Graphics Pipeline
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   Vertex transformation: Translation, rotation,
   scaling, projection
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   Clipping and rasterization, hidden surface detection
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   Per-pixel operations: Lighting, texture mapping
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   Display finished frame
   

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8. Transformation matrices
   

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9. Illumination
   

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10. Texture mapping
    

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11. The Role of the Graphics card
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    GPU and RAM
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    Used for hardware accelerated graphics
    computations
    

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12. The Graphics Processing Unit
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    Implements the graphics pipeline in hardware
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    Performs vector and matrix operations, clipping,
    interpolation, rasterization and more
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    Can simultaneously perform many computations
    

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13. Video Memory
    

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14. The Graphics Pipeline
    

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15. APIs: OpenGL and Direct3D
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    Used to command the graphics card
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    Configure graphics pipeline, copy data to video
    memory, load and run shaders
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    Low-level
    

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16. Thank you \(^o^)/
    

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