1 lecture 2 main components of graphical systems graphical devices
Post on 19-Dec-2015
229 views
TRANSCRIPT
![Page 1: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/1.jpg)
1
Lecture 2
Main components of graphical systems
Graphical devices
![Page 2: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/2.jpg)
2
Graphical system: main components
![Page 3: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/3.jpg)
3
Graphical Models. Vector Graphics
Vector: a straight line is drawn between the two end-points
Monitors, plotters
![Page 4: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/4.jpg)
4
Graphical Models. Vector Graphics
Vector: a straight line is drawn between the two end-points
Monitors, plotters
![Page 5: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/5.jpg)
5
Graphical Models. Raster Graphics
Raster: the images are represented as matrices of colored points (pixels).
Modern monitors, printers
![Page 6: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/6.jpg)
6
Graphical Models. Raster Graphics
Raster: the images are represented as matrices of colored points (pixels).
Modern monitors, printers
![Page 7: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/7.jpg)
7
Vector Model
Vector Model
![Page 8: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/8.jpg)
8
Raster Model
Raster Model
![Page 9: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/9.jpg)
9
Vector vs. Raster
Raster Insensitive to
scene complexity
Large, but constant
Textured, colored interiors
Very limited
Vector Sensitive to scene
complexity
Variable. Depends on the scene
No. Boundary only
Based on continuous (Euclidean) geometry
Parameters Rendering
Performance Memory and
processing
Filled areas, interior
Transformations
![Page 10: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/10.jpg)
10
Vector vs. Raster
Conclusions about Raster Model:
It is supported by the modern displays and laser and ink-jet printers
It provides a better graphical appearance (filled areas)
It is difficult to use raster graphics for precise work (design, medical applications)
Difficulties in performing geometrical transformations The main geometrical primitives such as lines, circles,
polygons, etc. need approximation (scan-conversion)
![Page 11: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/11.jpg)
11
Graphical Model. Mixed Model.
Mixed Model: the images contain straight lines and curves which are rasterized eventually, as well as textures and filled areas.
![Page 12: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/12.jpg)
12
Input Devices
Mouse and trackball
![Page 13: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/13.jpg)
13
Input Devices
Joystick
![Page 14: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/14.jpg)
14
Input Devices
Tablet and pen
![Page 15: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/15.jpg)
15
Input Devices
Light pen and touch screen
![Page 16: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/16.jpg)
16
Input Devices
Space ball and data glove (3D data)
![Page 17: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/17.jpg)
17
Input Devices
Scanner, digital camera, camcorder
![Page 18: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/18.jpg)
18
Input Devices
3D scanner
![Page 19: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/19.jpg)
19
Output Devices
Plotter
![Page 20: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/20.jpg)
20
Output Devices
Plotter
![Page 21: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/21.jpg)
21
Output Devices
CRT (cathode Ray Tube)
![Page 22: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/22.jpg)
22
Output Devices
CRT
![Page 23: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/23.jpg)
23
Output Devices
Raster Scan Refresh at least 24 frames/s
![Page 24: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/24.jpg)
24
Output Devices
Color CRT
![Page 25: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/25.jpg)
25
Output Devices
Color CRT
![Page 26: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/26.jpg)
26
Output Devices
Color CRT
![Page 27: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/27.jpg)
27
Output Devices
LCD (Liquid Crystal Display)
![Page 28: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/28.jpg)
28
Output Devices
Plasma panels
![Page 29: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/29.jpg)
29
Output Devices
Ink-jet and laser printers
![Page 30: 1 Lecture 2 Main components of graphical systems Graphical devices](https://reader038.vdocuments.net/reader038/viewer/2022102718/56649d365503460f94a0e537/html5/thumbnails/30.jpg)
30
Output Devices
Calligraphic (vector) screens