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Graphics Vocabulary

Graphic Image A visual design or representation made using various methods and programs (ex. painting, drawing, shape, photograph)
Pixels Small squares of color in a grid; A collection of pixels can produce an image
Bitmap Image Also referred to as raster image; Are a complex image made up of pixels that usually create realistic images or photos (created with paint programs)
Vector Graphic Drawing created by using a series of lines and curves that usually create images like clip art, cartoons, diagrams, maps, etc. and can be resized without loading clarity (created with drawing programs
Resolution The clarity of an image, expressed as dots per inch (dpi) or pixels per inch (ppi); The higher resolution, the greater the image detail
Compression Reducing the size of an image; 2 types: lossy and lossless
Lossless Compression reduces the file size without losing any pixel information
Lossy Compression reduces the size of an image file by removing or simplifying data that is not essential (the greater the lossy compression, the poorer the quality of the image)
File Formats Tells the computer how to display, print, and process, and save the data; Dictated by the application program which created the file, and the operating system under which it was created and stored
GIF Lossy raster file format that reduces the number of colors in an image (best for web pages, small icons, etc.)
BMP Lossy raster file format similar to GIF
PNG Lossless raster file format that preserves image detail and preserve transparency (good general purpose format)
TIFF Lossless raster file that preserves image detail and preserve transparency (works best for high quality printing, files are quite large)
JPG Raster file format commonly used for photographs and images (for low to medium resolution needs, or pictures that do not require transparency); Most common digital format
WMF Windows meta file; Used for vector graphics
Aspect Ratio Ratio of width to height; Must be maintained when image is resized to avoid distortion
Created by: ohhheriiin