Free Articles  >>  Technology >>  Page 169  >> 

What is raster to vector conversion

Raster to Vector (or R2V) is used extensively in commercial and industrial applications to convert technical drawings, maps and other paper graphics from scanned raster files to vector formats.

The process starts with a high quality scan. When a paper drawing is scanned, the resulting digital file is a raster file. The large format scanner used to scan paper drawings for raster to vector conversion should be a scanner that is capable of providing a high quality image. Image quality is everything here. If two lines are muddied and appear as a single line in the scanned drawing it will be difficult, if not impossible, to know that they should be separated when the scanned raster image is converted to a vector image. Once you have the best scanned raster image possible, rectify the image to make sure it is aligned correctly, scaled correctly, and that it measures correctly on all axes points.

In order to work with a digital file in a CAD (Computer Aided Design) system, the scanned raster file needs to be converted to a vector file by a process called raster to vector conversion or, simply, vectorization. According to Wikipedia, "vectorization refers to the process of converting raster graphics into vector graphics." In very simple terms, this means converting pixels, which are dots of color (raster) like this . . . . . . . . . . . into lines (vectors) like this __________. It's important to note that when you enlarge a raster image, the dots or pixels begin to break apart, and you lose the clarity of the image. (Think about enlarging a photo taken with your digital camera). On the other hand, a vector image can be enlarged indefinitely without loss of integrity, because it is made of lines, arcs, polygons, etc.

But how exactly to convert from raster to vector?

There are many different conversion methods. There are commercially available raster to vector conversion software packages from companies like GTX, Hitachi, I/Vector, and Softelec. Some conversion service companies have written their own raster to vector conversion routines. Unfortunately I have found that one raster to vector conversion product does not fit all. It is not uncommon with 100 drawings, that 30% are converted via one (1) method, the next 40% need to converted via a different method, and the remaining are hand redrawn.

Please do not be misled with raster to vector software vendors promising 'automatic raster to vector conversion'. Simply put, it is not true. These products are tools - and only tools. They all can help in the conversion process, but they are not the cure-alls they claim to be.

Generally, I have found that the most reliable way to get "CAD Perfect" digital drawings is by using an experienced raster to vector conversion service. Make sure the firm has proven and verifiable capability to provide converted files that can be brought into your AutoCAD , Microstation, or other CAD program that you use. Make sure that the conversion service you choose is able to provide vector files that are easily editable in your PC CAD, CNC, GIS or other program.

Finally, confirm that the raster to vector conversion service that you use provides quality control and a satisfaction guarantee. The work should be guaranteed to be 100% correct, 100% of the time. No exceptions. No excuses.
About Author Oxana Kislyh :

The author of the article is working with a <a href="" target="_blank">raster to vector conversion company</a> - <a href="" target="_blank">CAD/CAM Services</a> that provides CAD conversion services, CAD drafting services, large format scanning services and raster to vector (R2V) conversion.

Article Source:
Article Url:

Article Added on Sunday, March 7, 2010
Publishers / Webmasters
Article ID: 221907
DELINK URL from Authors Bio
REMOVE Article
Tell A Friend
Leave A Comment!
Download this article in PDF
Report Article!
Search through all the articles:

252 Users Online!!
Related Articles:
Latest Articles:
Technology >> Top 50 Articles on Technology
Category - >
Advertising Advice Affiliate Programs Automobiles
Be Your Own Mentor Careers Communication Consumers
CopyWriting Crime Domain Names DoT com Entrepreneur Corner
Ebooks Ecommerce Education Email
Entertainment Environment Family Finance And Business
Food & Drink Gardening Health & Fitness Hobbies
Home Business Home Improvement Humour House Holds
Internet And Computers Kiddos and Teens Legal Matters Mail Order
Management Marketing Marriage MetaPhysical
Motivational MultiMedia Multi Level Marketing NewsLetters
Pets Psychology Religion Parenting
Politics Sales Science Search Engine Optimization
Site Promotion Sports Technology Travel
Web Development Web Hosting WeightLoss Women's Corner
Writing Miscellaneous Articles Real Estate Arts And Crafts

Disclaimer: The information presented and opinions expressed in the articles are those of the authors
and do not necessarily represent the views of and/or its owners.

Copyright AwareINDIA. All rights reserved || Privacy Policy || Terms Of Use || Author Guidelines || Free Articles
FAQs Link To Us || Submit An Article || Free Downloads|| Contact Us || Site Map  || Advertise with Us ||
Click here for Special webhosting packages for visitors of this website only!
Vastu Shastra

Business eMail Provided By AwareIndia

Company IDS