Raster and random scan display technologies, Computer Graphics

Assignment Help:

Raster and Random Scan Display Technologies

For display or printing graphics objects, various technologies have been invented. Research and development is still on for getting refined and more advanced display technologies for achieving as much realism as possible in graphics display. Early graphics devices were line-oriented. This means the primitive operations were line drawing. For example, a plotter was based on sketching the figure through a pen using line segments approximating the graphics object. For complex objects, thousands of line segments were used to plot the object.

Such devices were called vector displays or random scan displays. In the present time raster graphics is a standard technology commonly used in most of the graphics devices. Raster graphics uses a raster which is a 2-dimensional grid of pixels (picture elements). Each pixel may be addressed and illuminated independently, just as in a graph paper, we are able to address every cell independently. Therefore the primitive operation is to draw a point which means to assign a color to a pixel. Everything else is built upon that. There are a variety of hardcopy and display devices based on raster graphics technology. The inkjet and laser printers are examples of hardcopy devices whereas CRT (cathode ray tube) and LCD (liquid crystal display) are well known examples of display devices based on raster graphics.


Related Discussions:- Raster and random scan display technologies

Fill in the blanks, a__________of a scene is apart of a scene by which rela...

a__________of a scene is apart of a scene by which relate one part of the scene with the other parts of the scene

Illumination model - polygon rendering & ray tracing methods, Illumination ...

Illumination Model - Polygon rendering and ray tracing methods Theoretically illumination is exposure of a thing to the light that contributes to light reflected by an object

Define resolution, What is Resolution, how to adjust it.  Resolution: T...

What is Resolution, how to adjust it.  Resolution: The maximum number of points that can be displayed without overlap on a CRT is referred to as the resolution . A more prec

Depth-buffer (or z-buffer) method , Depth-buffer (or z-buffer) Method ...

Depth-buffer (or z-buffer) Method  Z-buffer method is a fast and easy technique for specifying visible-surfaces. Z-buffer method is also termed to as the z-buffer method, as

Briefly explain the importance of an adjustment layer, Question : (a) W...

Question : (a) What do you meant by "solo a layer " in Adobe After Effects. Explain briefly how would you perform it. (b) Briefly explain the importance of an adjustment lay

Delta-delta arrangement and in-line arrangement, Delta-Delta Arrangement an...

Delta-Delta Arrangement and In-Line Arrangement There are two types of shadow masks available, delta-delta arrangement and in-line arrangement. The in-line arrangement refers t

Important points about the frame buffers - graphics hardware, Important Poi...

Important Points about the Frame Buffers 1) Within a frame buffer, information storage starts from top left corner and goes until the bottom right corner. 2) By using this

Differentiate images and graphics, Question 1 Discuss the general properti...

Question 1 Discuss the general properties of analog signal Question 2 Differentiate images and graphics Question 3 Explain the video compression standard H.263

Introduction of curves and surfaces, Introduction of Curves and Surfaces ...

Introduction of Curves and Surfaces This section has covered the methods of generating polygons, closed and curves surfaces. Under those methods we have discussed different ty

Geographic information systems (gis)-image processing, Geographic Informati...

Geographic Information Systems (GIS): The most generally utilized software is: ArcMap . Characteristics: I.          Works inside a geographic context. II.         Great

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd