What Are Vector Images?
Vector images are images described by shapes such as circles and squares, as opposed to bitmap images which are described by pixels - squares of color arranged in a grid. The shapes are precise mathematical descriptions of the image and can be scaled without becoming blurry or "pixelated" (that blocky look that bitmap/raster images so often get when scaled up). Vector Art, in contrast, is described by the mathematical formulas of the shapes that make it up. Vector art is a design that can break apart and be changed, like color, size, depth, and text. As a result, the vector art can be viewed at any size without any blurriness or pixilation. It also means that you can change the image in more useful ways. For example, if your vector image contains a circle, you can easily just change the size of that circle, or even transform it into an ellipse (a type of oval). That would not be possible in a bitmap image. When providing us vector art it is important to make sure the file has been converted and vectorized to insure we are getting the purest form of their art.
Vector Image File Formats
• CDR – The file name for CorelDRAW. A vector based program largely used in the screen printing industry. It’s file name is cdr. The vector art created in Corel can be saved in the file format eps and pdf.
• AI *- The native format of Adobe Illustrator is the AI format (Adobe Illustrator Artwork), AI vector art can be saved in eps and pdf files * Corel Draw cannot open AI file unless they are saved as a pdf or eps and the file is converted and the font is converted to and outline. Adobe Illustrator or ai. files can be vector files, but are a format we cannot open. It is more used in the paper printing industry. They can be saved as eps. or pdf. Once saved in either of the two formats they can be used by us, but the person who created it in AI can do this, we cannot.
FILES VECTOR ART CAN BE SAVED IN TO BE OPENED IN COREL DRAW
• EPS - (Encapsulated PostScript) is perhaps the most common file to save a vector image format. It is the standard interchange format in the print industry.
• PDF -(Portable Document Format) is very widely used as a general purpose platform- independent document format. And while it is not exclusively used as such, it is also a very good file to save a vector image format.
Please remember to convert all text to outlines or curves as opposed to fonts.
Vector art files that are not bitmap embedded images saved in a .cdr (CorelDraw), eps or .pdf.
What Is Vectorization?
Vectorization, is the process of converting a bitmap image to a vector image.
It can be done by hand ("hand-tracing"), or by a computer using a program like Corel Draw and rebuilding the image.
This is the process of converting a bitmap image - described by a grid of tiny little pixels - into vector art, where the shapes are described with mathematical formulas. The main benefits of vector art are that it can be scaled without causing pixelation or blurriness, and that it can be edited in a much more intuitive way than pixel-based images. Anyway, The flip side of converting from vector art to a bitmap is easy as pie. In fact, any program that displays vector art has to convert it to a bitmap just to display it on the screen. The technical word for that process is "rasterization." The opposite process that of converting from a bitmap to vector art is not so easy. In fact, it is a somewhat ill-posed problem. The "standard" way to convert from a bitmap to a vector representation is for a human designer to just redraw the art in a vector editor. This is time consuming and frustrating, but it leads to consistently good results, and it is what people are used to.