There are two main types of image files: vector and raster. From the flipped lecture, I’ve learnt some differences between the two image types and I researched about them further. I would like to discuss them.
Raster:
- Raster images are more common in general such as jpg, gif, png, and are widely used on the web.
- You can blend colours to soften the transition from one colour to another like you’re painting while using a raster program.
- Photographs are raster images.
- Raster images are made of pixels. A pixel is a single point or the smallest single element in a display device.
- If you try to enlarge it, it will start pixelating.
Vector:
- When using a vector program you draw the outline of shapes.
- Some vector programs do have the ability to create colour gradients within one single shape, but these are actually raster effects.
- Vector images are mathematical calculations from one point to another that form lines and shapes.
- You can zoom in or enlarge it as much as you want and it will still look the same.
- Vector graphics are commonly used for logos, illustrations, technical drawings and printing.
Some software allows you to do both bitmap and vector illustration like Inkscape, Illustrator and Photoshop.
As far as my digital story is concerned, I really didn’t feel the need to work with graphics on it. I just used a little bit of Photoshop to adjust some of the photographs I had taken and to resize or change the orientation of some of them and I had to zoom in one of them to focus on the subject. Thankfully, it did not get pixelated or distorted that much.
Reference:
http://vector-conversions.com/vectorizing/raster_vs_vector.html
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