Raster and vector images

Arafa Daming - Raster Images

Arafa Daming - Vector Images

To work successfully in any graphics package, a designer need to have a fundamental understanding of raster images versus vector images. Raster images are created through the process of scanning source artwork or "painting" with a photo editing or paint program. A vector image is a collection of connected lines and curves that produce objects and created through the process of drawing with vector based program.

Now, let see the different :

Raster ImagesVector Images
ResolutionExpressed in terms of the dots per inch or dpi(pixels).Defined by math, not pixels.
File SizeHuge file sizes. Higher resolutions (dpi) and greater color depths, produce bigger file sizes.Very small in file size because do not need to keep track of each individual pixel in an image, only mathematical descriptions.
File FormatBMP (Windows Bitmap), PCX (Paintbrush), TIFF (Tag Interleave Format), JPEG (Joint Photographics Expert Group), GIF (Graphics Interchange Format) , PNG (Portable Network Graphic), PSD (Adobe PhotoShop) and CPT (Corel PhotoPAINT EPS (Encapsulated PostScript), WMF (Windows Metafile), AI (Adobe Illustrator), CDR (CorelDraw), DXF (AutoCAD), SVG (Scalable Vector Graphics) and PLT (Hewlett Packard Graphics Language Plot File)
Based ProgramCorelPhotoPaint, Adobe Photoshop CorelDraw, Adobe Illustrator
Advantage- Accurately reproduce the original source artwork.
- Raster effects (ie drop shadows, glows and some transparency interactions).
- Scale up or down without the loss of image quality.
- Easy coloring.

Have a nice day!

Write by Arafa Daming