Computer Graphics
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The document is a presentation on computer graphics by Ms. Nandini Sharma, highlighting its definition as the art of creating images using programming. It covers basic terminology such as pixels, resolution, frame buffers, and refresh rates, along with applications in various fields like graphic design, gaming, and virtual reality. The presentation also contrasts raster and random scan displays, explaining their characteristics.
Computer Graphics
- 1. SHRI RAM COLLEGE OF ENGINEERING & MANAGEMENT PALWAL PRESENTATION ON COMPUTER GRAPHICS Presented By: Ms. Nandini Sharma Assistant Professor
- 2. WHAT IS COMPUTER GRAPHICS? Computer graphics is an art of drawing pictures, lines, charts, etc using computers with the help of programming. Computer graphics is made up of number of pixels. 9/5/2018 2
- 3. BASIC TERMINOLOGY Pixel - A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device. It also called a Picture Element. 9/5/2018 3
- 4. CONTINUE…. Resolution - In computers, resolution is the number of pixels (individual points of color) contained on a display monitor. Expressed in terms of the number of pixels on the horizontal axis and the number on the vertical axis. The sharpness of the image on a display depends on the resolution and the size of the monitor 9/5/2018 4
- 5. CONTINUE Frame Buffer - The portion of memory reserved for holding the complete bit-mapped image that is sent to the monitor. Typically the frame buffer is stored in the memory chips on the video adapter. In some instances, however, the video chipset is integrated into the motherboard design, and the frame buffer is stored in general main memory. 9/5/2018 5
- 6. CATHODE RAY TUBE A cathode ray tube (CRT) is a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface. 9/5/2018 6
- 7. INTERLACING When referring to a computer monitor or another display, interlace or interlacing is a description of how the picture is created. With an interlaced display the picture is created by scanning every other line, and on the next scan, scanning every opposite line. Interlacing allows for a faster refresh rate by having less information during each scan at a lower cost. Unfortunately, this may cause flickering or noticeable line movements in some situations. 9/5/2018 7
- 9. GRAPHICS PRIMITIVES A computer Graphics can be anything like beautiful scenery, images, terrain, trees, or anything else that we can imagine, however all these computer graphics are made up of the most basic components of Computer Graphics that are called Graphics Output Primitive or simply primitive. 9/5/2018 9
- 10. REFRESH RATE Refresh rate is a characteristic of computer display monitors and projection devices that defines the frequency and ability of the device to repaint or redraw the entire visible display on the screen each second. Refresh rate is measured in hertz and will vary according to the architecture of the display device. Refresh rate is also known as vertical refresh rate or vertical scan rate. 9/5/2018 10
- 12. DIFFERENCE BETWEEN RASTER SCAN DISPLAY RANDOM SCAN DISPLAY 9/5/2018 12
- 13. CONTINUE,,, RASTER SCAN DISPLAY RANDOM SCAN DISPLAY 9/5/2018 13
- 14. APPLICATIONS Computational Biology and Physics Information of Graphics Scientific Visualization Graphic Design Computer-aided Design Web Design Digital Art Video Games Virtual Reality Computer Simulation Education Information Visualization 9/5/2018 14