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Graphics Vocabulary

Graphics Vocabulary. POFI 1100 Brookhaven College. Image Types. Image Types - Graphics programs often produce their own file types, but any image can be saved or exported as a common, widely-usable file types. There are many different types of graphics files.

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Graphics Vocabulary

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  1. Graphics Vocabulary POFI 1100 Brookhaven College

  2. Image Types • Image Types - Graphics programs often produce their own file types, but any image can be saved or exported as a common, widely-usable file types. • There are many different types of graphics files. • Each file type has its own advantages and disadvantages. • Use the file type best suited for your application.

  3. Image Types • GIF - Graphics Interchange Format (file extension “.gif”). A type of digital image used on the web for logos, drawings, and images that require transparent edges. GIF images can have a maximum of 256 colors, so they don’t work well for photos • JPEG - Joint Photographic Experts Group (file extension “.jpg”). A type of image used on the web for photos or logos with several gradations of color. JPEG images can have a maximum of 16.7 million colors. • JPEG (.jpg) files are the most common type for photography use.

  4. Image Types • TIFF - Tagged Image File Format (file extension “.tif”). A type of image often used for print output. TIFF images have larger file sizes that GIF or JPEG images. • WMF - Windows Meta File (file extension “.wmf”). A type of image used for Windows clip art. WMF files are vector images and can be resized without losing quality. • BMP - Bitmap (file extension “.bmp”). A type of image commonly used for clipart.

  5. Graphics Vocabulary • CMYK - Cyan, Magenta, Yellow, Black. Colors used for printed output. • RGB - Red, Green, Blue. Colors used for scanners, digital cameras, and on-screen display, such as the Web. • Grayscale - Commonly referred to as “black and white.” An output option for images in only shades of gray. • Color Depth - The number of colors in an image, ranging from 2 to 16.7 million. The more colors in an image, the larger its file size. • Compression - Shrinking the size of an image file by lowering the resolution or decreasing the color depth. • Pixel - An individual dot of color in a digital image. Each pixel’s color and characteristics are stored as digital code.

  6. Graphics Vocabulary • Resolution - The number of dots-per-inch(dpi) of an image. A higher dpi produces a clearer image. On-screen display is 72 dpi, while a standard printing resolution is 300 dpi. High end printers and scanners use up to 2400 dpi. • DPI - Dots-per-inch. See resolution. • Raster Graphic - A type of graphic composed of colored dots, or pixels. The fewer dots-per-inch, the smaller the file size of the graphic, but the less clear the image will be. Raster graphics cannot be dramatically resized without image degradation. • Vector Graphic - A type of graphic composed of points plotted mathematically on a grid. Many clip art files are vector graphics. Vector images can be resized without image degradation. Many clip art files are vector graphics.

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