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

Estimate general light such as bouncing around scene, identify a sphere alo...

identify a sphere along with a light source above it; hence its lower half will not be illuminated. In practice in a actual scene this lower half would be partially illuminated thr

Briefly explain color profile, Question 1) Why are selection tools useful?...

Question 1) Why are selection tools useful? Describe them based on different categories Question 2) What are the different types of layers? Describe each type Quest

Production of animation , Historical and traditional methods for productio...

Historical and traditional methods for production of animation                                              Definition: Computer animation is a time depends phenome

Transformation, Define transformation. Explain all basic transformation

Define transformation. Explain all basic transformation

Arguments made in favor of digital sound, Arguments made in favor of Digita...

Arguments made in favor of Digital Sound Dynamic range. Lower noise floor. Immunity to wow and flutter. Absence of generation loss. Capability to apply redu

PHONG INTERPOLATION, DESCRIBE PHONG INTERPOLATION SHADING METHOD

DESCRIBE PHONG INTERPOLATION SHADING METHOD

Difference, difference between vecgen algoritham and bresenham''s algori

difference between vecgen algoritham and bresenham''s algori

Mathematical description of a perspective projection, Mathematical descript...

Mathematical description of a Perspective Projection A perspective transformation is found by prescribing a center of projection and a viewing plane. Let here assume that P(x

Briefly explain the 12 stages in image processing, QUESTION (a) In Autom...

QUESTION (a) In Automatic Contrast Adjustment briefly explain how to stretch an image to its full intensity (b) Write down a mathematical function of a Modified Automatic Con

Character generation, What is character generation and explain it''s two me...

What is character generation and explain it''s two method: 1> Bitmap method 2> outline method.

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