Thursday, 22 January 2015

VECTOR IMAGES

VECTOR IMAGES
 
 
The term vector graphics means an image that is made up of mathematical based expressions, for example, curves, points and lines. They are also based on shapes and polygons. The images are made up of lines going through certain 'control points' or 'nodes'. Theses points go through the x and y axes and help to visually show the direction of the lines. Each of the separate paths can be changed differently in the thickness, the colour and the fill. Vector graphics are also different in that they aren't made up of pixels. Because of this, magnifying the image gives it a much clearer and crisper look than a pixelated image once it is zoomed in.
 
The vector images, like raster images, have their very own set of file extensions.
 
EPS: Encapsulated PostScript
AI: Adobe Illustrator
FLA: Adobe Flash Application

Even if a vector image is large, the image file size will still be relatively small, also a vector image is easily scalable, meaning that if it is made smaller the image itself doesn't lose any of its' detailing that it has, so its' quality constantly remains the same no matter how small or large it becomes.

Below is a look at a vectorized image in comparison to a rasterized image. The raster image is clearly less high quality than the vector image. The vector image quality is fully detailed in comparison to the raster image.

 
http://api.ning.com/files/aCFMTTNs7OP3jH51v8dTDLG2lWqirUn1HWS-DcUDUTHqg3D2wr8QA5J2fAFXsdZdoUW7fbSPAsLB9y4USsXhBw__/raster_vs_vector_surveying.jpg
 
 


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