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Most of the digital images and photographs that you see on the web are images of raster graphics or bitmaps (JPG). An image of raster graphics is plainly defined just with a grid of the regular pixels, which are set for specific colors. The Raster graphics images are actually resolution dependent and also cannot be made larger without apparent quality loss. Therefore, for images that need to be reduced to a higher resolution, it is often better to use vector graphics.
The images that are represented with vector graphics will be scaled to any size and still keep the edges smooth. This is ideal for dealing with things like fonts and logos.
We are going to explain the basics about vectoring so you can learn the difference between vector images and pixel-based images (raster), the mathematical work involved in converting images to vectors and the software that is needed to do so.
When we enlarge a raster image, we begin to see pixels and artifacts, so this style cannot be used for large-scale projects. And again, vector images are actually composed of the regular mathematical forms and lines that could be truly expanded (or maybe contracted) many times out there without generating problems. This makes vector graphics much more versatile than raster graphics.
Vectorize is the process of converting a pixel-based image (eg, PNG as well as JPEG file formats) into a stunning vector-based format (SVG, EMF, and EPS file types), where each facet of the image is treated as a line or form. This includes text, symbols, and other small details. With a quality vectorization, the two image formats should not be able to be distinguished with the naked eye.
These images are created using computer software designed to create complete wire mesh type images that include knots, lines, and curves. These lines and curves created with mathematical definitions can be added values of colors, shades, and shadows. In addition, these vectors can be resized as many times as desired, without damaging the resolution.
From the beginnings of the computer in the 1950s to the 1980s, a vector system was used to generate graphics different from the current one. In this calligraphic system, the electron beam of the cathode ray tube on the screen was guided directly to draw the necessary shapes, line segment by line segments, leaving the rest of the screen black. This process was repeated at high speed to achieve a free image of intermittences or very close to being free of them.
This system allowed visualizing static and moving images of good resolution (for those dates) without using the unimaginable amount of memory that would have been needed to achieve the equivalent resolution in a rasterization system. It allows the sequence of images to give the sensation of movement and even getting them to blink by modifying only some of the words in the graphics code in their respective display file. These vector-based monitors were also known as XY monitors (XY displays).
One of the first uses of vectors in the visualization process was carried out by the United States Air Force. The system of generation of graphics by means of vectors was used until 1999 in air traffic control and probably still continues to be used in various military systems. Ivan Sutherland used this same system on the TX-2 to run his Sketchpad program at the MIT Lincoln Laboratory in 1963.
Subsequent vector graphic representation systems included the Digital GT40; there was a console called Victrix that used vector graphics to show video games like Asteroids and Space Wars; and equipment like the Tektronix 4014, could generate dynamic vector images.
The term vector is commonly used in the context of computer-generated two-dimensional graphics. It is one of the many ways an artist counts to create an image with a rasterized preview. Other forms of use can be in texts, in multimedia and in the creation of 3D scenarios. Virtually all 3D modeling programs use techniques that generate 2D vector graphics. The plotters used in technical drawing continue to draw the vectors directly on the paper.
Generation Of Graphics
They are used to create logos that can be expanded at will as well as in the technical design with programs of CAD type (Computer Aided Design), very popular to generate 3D scenes.
Document Description Languages
Vector graphics allow describing the appearance of a document regardless of the resolution of the output device. The most popular formats are PostScript and PDF. Unlike matrix images, you can view and print these documents without loss in any resolution.
Most current applications use text formed by vector images. The most common examples are TrueType, OpenType and PostScript.
In 3D video games, it is common to use vector graphics.
The vector graphics found on the World Wide Web are usually either open VML and SVG formats, or SWF in a proprietary format. The latter can be viewed with Adobe Flash Player
A key point of vector images is their practice set-up at the time of printing as it is possible to scale them and increase their definition in an unlimited way. For example, you can take the same vectorized logo, print it on a personal card and then enlarge it and print it on a fence, maintaining the same level of quality in both images. The most popular examples of document format that must be printed are PDF and PostScript.
Another application where vector graphics are important is the cutting plotter or vinyl cutting printer, since this, as its name suggests, cuts out areas of color designed by the user from a digital file. These figures are constructed from vectors that are interpreted by the plotter as the limit lines through which the blade that cuts the material must pass. Very widespread in the guild of the lettering, the decoration of either flat surfaces or vehicle bodies!
Vector Images Advantages
Depending on each particular case, vector images may require less storage space than a bitmap. Images formed by plain colors or simple gradients are more likely to be vectorized. The less information to create the image, the smaller the file size will be. Two images with different presentation dimensions, but with the same vector information will occupy the same storage space.
They do not lose quality when resized. In principle, you can scale a vector image in an unlimited way. In the case of matrix images, a point is reached where it is evident that the image is composed of pixels.
Some Formats Allow Animation
This is done in a simple way by basic operations such as translation or rotation and does not require a large data collection since what is done is to relocate the coordinates of the vectors in new points within the x, y, and z-axes in the case of 3D images.
What Images Are Suitable For The Process Of Vectorization?
Not all raster images look good when converted to vector images, especially detailed photographs of people and animals. On the other hand, logos, cartoons, schemes and other images that are based on geometry are ideal for vectoring since they can be easily replicated with lines and shapes.
How Are Vector Images Used In The Real World?
With Which Software Programs Can The Images Be Vectorized?
Perhaps, the most popular graphics editing method with the vectorization functions is indeed the well-known Adobe Illustrator that actually has the great Live Trace feature, which could detect curves as well as create our vectors from them out there. Some Other options include (CPT) the popular Corel PowerTRACE that can be accessed through a Corel power draw) and Potrace (an open source program).
However, the best vectorization results are achieved manually. Graphic designers must express their creative minds and understand every strength and limitation to achieve success in this niche. You will have more control over the final graphic if you upload a rasterized graphics to a program such as Illustrator, trace each shape separately and then combine them as a new vector file.
Finally, the cutoutexpert offers great Raster to Vector Image Conversion as well as other editing solutions. We could take whatever artworks you might have available and then recreate it in a thoroughly clean, vectorized layout so it is prepared for so many different printing purposes. We provide you with affordable price and also quality image designing solutions
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