Computer Graphics · Unit 1 · 3 hrs
Introduction of Computer Graphics
Exam-focused notes for Introduction of Computer Graphics (Computer Graphics, CSC214): what the TU syllabus asks and how it has actually been tested, with 5 solved past questions from this unit.
What this unit covers
- A Brief Overview of Computer Graphics
- Areas of Applications
- Graphics Hardware: Display Technology, Architecture of Raster-Scan Displays, Vector Displays, Display Processors, Hard copy device
- Input Devices
- Graphics Software: Software standards, Need of machine independent graphics language
Graphics Hardware
What do you mean by the refresh rate of a display device? Explain vector scan display with a suitable diagram. [5]
--- The refresh rate is the number of times a screen's displayed image is repainted or refreshed per second. It is expressed in Hertz (Hz). For example, a refresh rate of 75 Hz means the image is refreshed 75 times per second. The refresh rate for each disp...
Full solved answer →Calculate the total memory required to store a 5 minute video in SVGA system with 24 bit true color and 30 fps. [5]
Parameter Value ------------------ Duration 5 minutes Display system SVGA (Super VGA) Color depth 24-bit true color = 3 bytes/pixel Frame rate 30 fps SVGA standard resolution $800 \times 600$ pixels Note: "SVGA resolution" is a known standard value ($800 \t...
Full solved answer →Differentiate between raster and vector graphics method. [5]
Raster Graphics (Raster Scan System): Raster display typically has an array of addressable dots (pixels), which can be individually set to a particular color or intensity. The electron beam scans from left to right and top to bottom across the entire screen...
Full solved answer →Calculate the total memory required to store a 8 minute video in a SVGA system with 24 bit true color and 25 fps. [5]
Parameter Value ------------------ Duration 8 minutes Display system SVGA = 800 x 600 pixels Color depth 24-bit true color Frame rate 25 fps --- $$800 \times 600 = 480{,}000 \text{ pixels}$$ Each pixel = 24 bits. $$480{,}000 \times 24 = 11{,}520{,}000 \text...
Full solved answer →Differentiate between vector and raster graphics. [5]
Vector Graphics: Vector displays generate images by directing the electron beam only to the specific parts of the screen where the picture is to be drawn. The picture definition is stored as a set of line-drawing commands (specified by endpoints) in a refre...
Full solved answer →Make Unit 1 stick
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