Random scan display device - types of refresh monitors, Computer Graphics

Assignment Help:

Random Scan Display Device

The original cathode ray tube, developed in the late fifties and early sixties, produced charts and pictures, line through line on the tube surface in any of random order or direction specified, in a vectorial fashion. The e- beam was moved along the exact direction and for the exact length of the line as particular. For this purpose, the kind of device was termed as a Vector, Calligraphic or Stroke as it drew lines just like our ancestors drew letters as pictures, stroke by stroke. The method was the same to a hand-sketch or pen-plot.

The graphics commands are passed on to a display-file program produced by the computer and stored in the refresh storage region or buffer memory. The program is executed one time in all refresh cycle of about 1/30 sec. The e- beam is moved to trace the image line by line through a display processor. All line, if curved or straight is displayed through the activation of exact points among particular end-point via means of vector creators of the digital or analog type, the former being smoother, and the latter being cheaper and faster. Curved lines and text qualities are displayed like a series of short lines or through a sequence of points.

 


Related Discussions:- Random scan display device - types of refresh monitors

Scan conversion of line with the slope, Scan Conversion of Line with the sl...

Scan Conversion of Line with the slope (0 Currently the pixel positions beside the line path are determined through sampling at Unit x intervals that is, starting from the fi

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

What is seed fill, What is seed fill?  One way to fill a polygon is to ...

What is seed fill?  One way to fill a polygon is to begin from a given point (seed) known to be inside  the polygon and highlight outward from this point i.e. neighboring pixel

State the areas of use of data goggles, State the Areas of use of data gogg...

State the Areas of use of data goggles Entertainment   Used in television/films as special effects (for example "holodeck" in Star Trek: The Next Generation and Brazilian

Transformation, Explain window to view port transformation

Explain window to view port transformation

Types of authoring tools in multimedia, Types of Authoring Tools Autho...

Types of Authoring Tools Authoring tools are grouped depends on metaphor used for sequencing or organizing multimedia components and events as: Page or Card Based Tools

Advantages of computer aided design, Advantages of Computer aided design  ...

Advantages of Computer aided design  -   It is simpler to modify drawings  -   A library of parts can be kept  -   Ability to do automatic costings -   Ability to mod

Curved surfaces, Build a program that allows: 1. using mouse or keyboard...

Build a program that allows: 1. using mouse or keyboard to move around on a set of 16 control points;  2. modify the value (drag along x, y, or z) of a point;  3. display

Rotation about z-axis - transformation for 3-d rotation, Rotation about z-a...

Rotation about z-axis - Transformation for 3-d rotation Rotation about z-axis is explained by the xy-plane. Suppose a 3-D point P(x,y,z) be rotated to P'(x',y',z') along with

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