http://www.varigraphics.com/vector-graphics-wikipedia/
vector graphics wikipedia
Explanation on Raster Graphics?
Can anyone give me info on Raster graphics, vector graphics and explain them? And please don’t link me to wikipedia.
about Raster Graphics:
Raster graphics are digital images created or captured (for example, by scanning in a photo) as a set of samples of a given space. A raster is a grid of x and y coordinates on a display space. (And for three-dimensional images, a z coordinate.) A raster image file identifies which of these coordinates to illuminate in monochrome or color values. The raster file is sometimes referred to as a bitmap because it contains information that is directly mapped to the display grid.
A raster file is usually larger than a vector graphics image file. A raster file is usually difficult to modify without loss of information, although there are software tools that can convert a raster file into a vector file for refinement and changes. Examples of raster image file types are: BMP, TIFF, GIF, and JPEG files.
about vector graphics:
Same as object-oriented graphics, refers to software and hardware that use geometrical formulas to represent images. The other method for representing graphical images is through bit maps, in which the image is composed of a pattern of dots. This is sometimes called raster graphics. Programs that enable you to create and manipulate vector graphics are called draw programs, whereas programs that manipulated bit-mapped images are called paint programs.
Vector-oriented images are more flexible than bit maps because they can be resized and stretched. In addition, images stored as vectors look better on devices (monitors and printers) with higher resolution, whereas bit-mapped images always appear the same regardless of a device’s resolution. Another advantage of vector graphics is that representations of images often require less memory than bit-mapped images do.
Almost all sophisticated graphics systems, including CADD systems and animation software, use vector graphics. In addition, many printers (PostScript printers, for example) use vector graphics. Fonts represented as vectors are called vector fonts, scalable fonts, object-oriented fonts, and outline fonts.
Note that most output devices, including dot-matrix printers, laser printers, and display monitors, are raster devices (plotters are the notable exception). This means that all objects, even vector objects, must be translated into bit maps before being output. The difference between vector graphics and raster graphics, therefore, is that vector graphics are not translated into bit maps until the last possible moment, after all sizes and resolutions have been specified. PostScript printers, for example, have a raster image processor (RIP) that performs the translation within the printer. In their vector form, therefore, graphics representations can potentially be output on any device, with any resolution, and at any size
vector graphics wikipedia
What’s the difference between Adobe Photoshop and Illustrator?
I tried Wikipedia, but it just describes Illustrator as “vector-based drawing program” and photoshop as “graphics editing program” but doesn’t really give a lot of detail of what you can actually do with each. So, what is each best for? Which is better for creating content for web pages?
Photoshop is for editing and retouching photos and color correcting things. You can also create graphics in Photoshop but it’s not as fluid and is harder to do. Airbrushing and painting works well in Photoshop too. Illustrator is best for making buttons, icons and layouts since it’s used for Illustration purposes and it’s easier to work with text. They also have preset template sizes for web layout. It’s also easy to import Illustrator files into Flash and Dreamweaver. A Good place for tutorials is http://lynda.com/ if you are looking to learn how to use them.
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