All About Raster to Vector Conversion

Hello out there.  It’s a new week, and we have the scanners warmed up, the technical guys and gals in front of their computers and we’re rolling.  I love coming to work!  Every day is different.  Every project brings new challenges. 

At the end of last week, I was talking to some folks about a CAD Conversion job they want done.  We were specifically discussing raster to vector conversion.  I thought that some of the questions that came up in our conversation would make for a good blog entry this week.  So…here goes…

What is raster to vector conversion?

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 __________.    When you enlarge a raster image, the dots or pixels begin to break apart, like this .   .   .   .   .   .   .   .   .   .   .  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, like this________________________ because it is made of lines, arcs, polygons, etc. 

Why is this concept important?

When you design in CAD, (Computer Aided Design) you have to work with lines, just like you would draw with a pencil, if you were designing on paper.   Here are some sample AutoCAD files. 

How do you convert from raster to vector?

This is where the “magic” comes in, better known as experience and know-how.  CadCam Services uses many different conversion methods. We use CAD conversion products from, GTX, Hitachi, I/Vector, and Softelec.   In addition we have quite a few routines and conversion programs we’ve written ourselves.  Unfortunately we have found that one R/V conversion product does not fit all. It is not uncommon with 100 drawings, that 30% are converted via one (1) method, the next 40% are converted via a different method, and the remaining are hand redrawn. Please do not be mislead with R/V software vendors promising ‘automatic raster to vector conversion’. Simply put, it is not true. These products are tools – and only tools. They all help in our conversion process, but they are not the cure-alls they claim to be. We spend hours, and hours inside of your drawings to get them to be 100% correct.   

Next week, we’ll talk about CAD Translations.

Raster to Vector Conversion – Cad Conversion Tools

The process of converting raster graphics to vector graphics is known as vectorization. Raster to vector refers to the technology used in this conversion process. Raster to Vector conversion also known as R2V is used extensively in commercial and industrial applications and converts technical drawings, maps and other graphics from raster to vector formats providing easy archiving and quick access. Mapping and GIS data conversion are highly dependent on this application apart from architectural, construction, engineering, electrical and house plans.

When used in photography, vectorization changes the appearance of the photograph to resemble a painting or drawing. In geographic information systems (GIS) vectorization helps to create maps out of satellite or aerial images. In the field of graphics, this process assists in resizing without any change in the shape of the graph.

Why Vector Images have an Upper Hand

Raster images tend to lose their picture quality when enlarged. This is where vector images come in. A vector image can be easily resized without losing detail. Raster images are made up of pixels while vector images are comprised of lines and curves.

Vector images can be enlarged with smooth curves eliminating any jaggedness and loss of quality. They can be printed at any resolution or size.

Files of converted vector formats are compatible with popular applications such as Corel Draw, Adobe Illustrator, AutoCAD, and many others. Once a raster image is converted to the vector format, it can be imported to a CAD application and further edited as per requirement. This is a simple method of converting paper-based drawings to CAD drawings for further editing and use.

The Raster to Vector Market Today

There are a number of converters in the market today that perform the task of converting raster images to vector. The raster to vector conversion application offered by Cad Cam services is way ahead of competition. Their Raster to Vector conversion (also known as R2V) provides a seamless blend of editing and conversion commands and converts architectural, mechanical and various technical drawings, maps, archive drawings, schematic diagrams photos and other types of line artwork from raster to different vector formats. Their raster to vector conversion services are used for logo vectorization, vector graphics, vector stencils, vector clipart and vector web icons.

Raster to Vector Conversion Services offered by CAD/CAM Services Inc.:

• Standalone Software – R2V 2.0 Desktop: Our easy-to-use standalone raster to vector product is a Windows-based application for raster-to-vector conversion making it easily accessible for end-users. R2V 2.0 Desktop can be downloaded directly from www.online-r2v.com to edit drawings without converting them to a CAD format. R2V Desktop, a completely automated application, can be used to update and convert graphic images to vector.

• Web Online Version – R2V 1.0 Web: The web version of Online-R2V can be used to upload scanned graphic images that can be easily converted to vector in just 48 hours. Our R2V Web requires no downloading! Simply upload the application through the Web and effortlessly convert raster images to vector. R2V Web enables unlimited number of raster files to be converted and allows updating, editing and digitizing scanned graphic images to vector automatically.

• Cad Perfect™ Services: Get clean, high quality and accurate Cad Perfect™ CAD files for only$125 per file! Within 48 hours of submitting scanned images, Perfect Cad files with real lines, arcs, circles and text as text, are delivered. Besides being a layered and easy-to-use process, CAD/CAM’s CAD Conversion process is a manual redrawing method.

For more information on raster to vector conversion log on to
www.online-r2v.com