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2)the lines producced are ziz-zag as the plotted values are discrete.
3)high degree realism is achived in picture with the aid of advanced shading and hidden surface technique.
4)decreasing memory costs have made raster systems popular.
Random scan1)random displays have high resolutions since the picture definition is stored as a set of line drawing commands and not as a set of intensity values.2)smooth lines are produced as the electron beam directly follows the line path.
3)realism is difficult to achieve.
4)random-scan system's are generally costlier.
What else can I help you with?
Is raster scan displays same as bit-mapped displays?
raster scan display -based on television technology.where as random scan display based on hard copy devices.raster scan display cannot directly pass electron beam through the scan line..but random scan directed the beam toward the scan line.
What are the applications of raster scan graphics?
Application of Raster scan display: Basically it is used in Plotters. and mainly more like....Printers,,,,
What is vector scan?
Scanning mode in which beam is scanning selected areas only; after scanning of selected area is completed beam is turned off and moved to another area to be scanned. It is also called Raster Scan Method.
What is vector scan display device?
A vector scan display device is a type of display technology that generates images by drawing lines directly on the screen using an electron beam. Unlike raster scan displays, which create images by illuminating pixels in a grid pattern, vector displays render graphics by moving the beam continuously to form shapes and lines. This method allows for smoother curves and sharper images, making vector displays particularly suitable for applications like oscilloscopes and early computer graphics. However, they are less common today, having been largely replaced by raster-based technologies such as LCD and LED displays.
What is the advantages and disadvantages of vector scan disply?
Advantages of vector scan display include high resolution, smooth lines, and efficient use of memory. Disadvantages can include limited color capability, complexity in generating images, and susceptibility to distortion with complex shapes.
Which display device is suited for cad system a a crt with vector referesh monitor b crt with raster scan monitor c plasma panel display d led display?
a
What is a raster scan system What is a picture element how it is?
Raster scan, or raster scanning: is the pattern of image detection and reconstruction in television, and is the pattern of image storage and transmission used in most computer image systems. The word raster comes from the Latin word for a rake, as the pattern left by a rake resembles the parallel lines of a scanning raster. Picture element: In a raster scan, an image is cut up into successive samples called pixels, or picture elements, along scan lines. Each scan line can be transmitted as it is read from the detector, as in television systems, or can be stored as a row of pixel values in an array in a computer system. On a television receiver or computer monitor, the scan line is turned back to a line across an image, in the same order. After each scan line, the position of the scan line is advanced, typically downward across the image in a process known as vertical scanning, and a next scan line is detected, transmitted, stored, retrieved, or displayed. This ordering of pixels by rows is known as raster order, or raster scan order.
What are the various characteristics of raster scan?
Raster scan, or raster scanning: is the pattern of image detection and reconstruction in television, and is the pattern of image storage and transmission used in most computer image systems. The word raster comes from the Latin word for a rake, as the pattern left by a rake resembles the parallel lines of a scanning raster. Picture element:In a raster scan, an image is cut up into successive samples called pixels, or picture elements, along scan lines. Each scan line can be transmitted as it is read from the detector, as in television systems, or can be stored as a row of pixel values in an array in a computer system. On a television receiver or computer monitor, the scan line is turned back to a line across an image, in the same order. After each scan line, the position of the scan line is advanced, typically downward across the image in a process known as vertical scanning, and a next scan line is detected, transmitted, stored, retrieved, or displayed. This ordering of pixels by rows is known as raster order, or raster scan order.
What are the characteristics of raster scan system?
In Raster scan display electron beam swept across the screen one row at a time from top to bottom.when reaches the bottom scan starts again from top.It produce a zig zag lines.
Random scan system?
A random scan system, often referred to as a vector display or random-access display, generates images by directly controlling the electron beam in a cathode ray tube (CRT) to draw lines and shapes on the screen. Unlike raster scan systems, which fill the screen pixel by pixel in a grid format, random scan systems allow for more efficient rendering of images with sharp lines, making them ideal for applications like computer-aided design (CAD) and vector graphics. This method can result in smoother and more precise images, particularly for line art and geometric shapes. However, random scan systems are less common today due to advancements in raster-based technologies and displays.
What is the difference between shadow and delta shadow mask?
Shadow MaskCommonly used in raster scan display.produce much wider range of color.picture quality is greater.Delta Shadow MaskCommonly used in color CRT system.produce less wider range of color.picture quality is less.
What the difference between Scan and skim?
the difference is that scan is when your scanning some or something and skim is a thin layer of a substance on the surface of a liquid
