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Graphics Vocabulary
Vocab
| Term | Definition |
|---|---|
| graphic image | a visual design or representation made using various methods and programs(ex. painting, drawing, shape, photograph) |
| pixels | small squares of colors in a grid; a collection of pixels can produce an image |
| bitmap image/raster 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) |
| resolution | the clarity of an image, expressed as dots per inch (dpi) or pixels per inch (ppi); the higher the 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, 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 webpages, small icons, etc. |
| BMP | lossy raster file format similar to GIF |
| PNG | lossless raster file format that preserves image detail and preserves transparency(good general purpose format) |
| TIFF | lossless raster file format that preserves image detail and preserves 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:
lakenbacon08
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