Graphic Files

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Types of graphic files

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Graphic Files

  1. 1. Graphics Files
  2. 2. Types of Graphic Files ● Graphic Interchange Format (GIF) ● Joint Photographic Experts Group (JPEG) ● Portable Networks Graphics (PNG) ● Tagged Image File Format (TIFF) ● Raster Graphics ● Vector Graphics
  3. 3. Graphic Interchange Format (GIF) ● ● ● ● A bitmap image format developed by CompuServe in 1987 Supports 8 bits per pixel, allowing reference to its 256 color palette Unsuitable for reproducing photographs or other complex images Well suited for simple graphics such as logos
  4. 4. Joint Photographic Experts Group (JPEG) ● ● ● ● Commonly used method of lossy compression for digital photography Can reduce file sizes up to more than 80% of the original size. Some of the image's quality is lost when it is compressed Used to make the file smaller without making the image unrecognizable.
  5. 5. Portable Network Graphics (PNG) ● ● ● ● A raster graphics file format that supports lossless (nothing is lost) data compression A replacement for Graphics Interchange Format (GIF) Designed for transference of images over the Internet Supports: – Palette based images – Grayscale images – Full color nor-palette based images
  6. 6. Tagged Image File Format (TIFF) ● ● ● ● Format for storing raster graphic images Popular with graphic artists, publishing industry, and photographers (both amateur and professional) Created by Aldus for use in desktop publishing Supported by image-manipulation apps, publishing and page layout apps, scanning, faxing, and word processing, optical character recognition and many other apps.
  7. 7. Raster Graphics vs. Vector Graphics ● ● ● Raster Graphics: dot matrix data structure representing a grid of pixels viewed on a monitor, paper, or another display device. Vector Graphics: uses lines, curves, and shapes (or polygons) in order to display/depict images in computer graphics. Difference: Raster uses dots to compose and image, while vector uses lines, curves, and shapes.

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