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Raster vs. Vector Images

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  • Raster vs. Vector Images




    Vector images have many advantages, but the primary disadvantage is that they&#39;re unsuitable for producing photo-realistic imagery. Vector images are usually made up of solid areas of color or gradients, but they cannot depict the continuous subtle tones of a photograph. That&#39;s why most of the vector images you see tend to have a cartoon-like appearance. Even so, vector graphics are continually becoming more advanced, and we can do a lot more with vector drawings now than we could just a few years ago. Today&#39;s vector tools allow you to apply bitmapped textures to objects giving them a photorealistic appearance, and you can now create soft blends, transparency, and shading that once was difficult to achieve in vector drawing programs.




    Because bitmaps are resolution dependent, it&#39;s difficult to increase or decrease their size without sacrificing a degree of image quality. When you reduce the size of a bitmap image through your software&#39;s resample or resize command, you must throw away pixels. When you increase the size of a bitmap image through your software&#39;s resample or resize command, the software has to create new pixels. When creating pixels, the software must estimate the color values of the new pixels based on the surrounding pixels. This process is called interpolation. This is why bitmap or raster images get fuzzy.

  • #2
    Good info Xray, thank you for sharing.