RGPV CS603(B) Computer Graphics & Visualization Unit 1 study material. Learn Raster Scan Displays, Pixels, Frame Buffer, DDA Algorithm, Bresenham Algorithm, Circle Drawing Algorithms, Polygon Filling, Boundary Fill and Flood Fill Algorithms.
Unit 1 builds the foundation of Computer Graphics. It explains how images are displayed on screens, how pixels are stored in frame buffer, and how basic line, circle and filling algorithms are used to draw graphics objects.
Understand raster scan display, random scan system, pixels, frame buffer and display devices.
Learn DDA and Bresenham line drawing algorithms used for scan conversion.
Study polygon fill, boundary fill and flood fill techniques used in computer graphics.
Complete syllabus-based topics of Computer Graphics & Visualization Unit 1.
A display technique where the screen is refreshed line by line from top to bottom.
Pixel is the smallest addressable unit of a display screen used to form graphics images.
Memory area that stores pixel values used to display images on the screen.
Technique used to draw lines and curves by controlling beam movement directly.
Methods used to display characters and symbols on graphical output devices.
Display system where the electron beam directly draws only required lines and curves.
Output devices used to display graphical information such as monitors and display screens.
Process of converting geometric objects into pixel-based representation.
Digital Differential Analyzer algorithm used for drawing straight lines on raster displays.
Efficient integer-based line drawing algorithm used in computer graphics.
Algorithms used to generate circles on raster displays using symmetry properties.
Circle generation algorithm that decides next pixel using midpoint decision parameter.
Integer-based circle drawing algorithm that avoids floating point calculations.
Technique used to fill the interior area of a polygon with a selected color.
Fills a region until a specified boundary color is reached.
Fills connected area having the same initial color with a new color.
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These questions are useful for 7 marks and 14 marks answers in RGPV exams.
High-priority topics from Unit 1 for RGPV exam preparation.
| Topic | Expected Frequency | Importance |
|---|---|---|
| Raster Scan Display | High | ⭐⭐⭐⭐⭐ |
| DDA Algorithm | Very High | ⭐⭐⭐⭐⭐ |
| Bresenham Line Algorithm | Very High | ⭐⭐⭐⭐⭐ |
| Midpoint Circle Algorithm | High | ⭐⭐⭐⭐ |
| Polygon Fill Algorithm | Medium | ⭐⭐⭐⭐ |
| Boundary Fill Algorithm | High | ⭐⭐⭐⭐ |
| Flood Fill Algorithm | High | ⭐⭐⭐⭐ |
Raster Scan Display refreshes the screen line by line from top to bottom and uses pixels to create images.
DDA is a line drawing algorithm that calculates intermediate points between two endpoints.
Bresenham Algorithm is important because it uses integer calculations and draws lines efficiently.
Boundary Fill Algorithm fills an area until it reaches a specified boundary color.
Flood Fill Algorithm fills all connected pixels of the same initial color with a new color.
DDA, Bresenham Line Algorithm, Raster Scan Display, Boundary Fill and Flood Fill are highly important.
DDA, Bresenham, Raster Scan Display and Fill Algorithms are frequently asked in RGPV exams.
These algorithms are the base of drawing lines, circles and filled regions in graphics systems.
Unit 1 builds the base for 2D transformation, 3D transformation and visualization topics.