Tuesday, 5 November 2013

Graphics Unit 23: Bitmaps or Vectors

Bitmaps and Vectors:




Raster (Bitmap):
- Done in Photoshop
- Rasterization = turn an image into pixels
- Made of dots


Vectors:
- Done in illustrator
- Connect the points
- Hi-Rez
- Resolutions

Detailed Explanation:

A vector is a format of a drawing while a bitmap is a format for a photo. Vectors are different from bitmaps in the way that they can be re sized and stretched without becoming pix-elated and the fact that they are created in adobe illustrator.  They can be Hi-Resolution and still keep all their image quality. Bitmaps only have a fixed resolution so when they are changed they become blurry or distorted, shown in the photo below. Bitmaps are created in Adobe Photoshop. So bitmaps or rasters composed of pixels while vectors are composed of paths. Rasters individual pixels can be different colours or shades. When zoomed in the raster becomes blurry because you can see the pixels while the paths of vectors are connected with dots to describe the image. Raster images are usually also taken with a digital camera.

The likely uses of a bitmap (raster) are for photos since they have a small file size.
The likely uses of vectors are to print images since they won't be pixelated so it makes sense to use them for clothing, vectors can also be used for website logos, headers, buttons so if you zoom in on the webpage then the images won't become distorted.

Here is an example image of the quality difference in both vectors and bitmaps:



Example of vector paths/dots:







No comments:

Post a Comment