File:Posterization_example.jpg
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![File:Posterization example.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Posterization_example.jpg/441px-Posterization_example.jpg)
Size of this preview: 441 × 599 pixels. Other resolutions: 177 × 240 pixels | 353 × 480 pixels | 658 × 894 pixels.
Original file (658 × 894 pixels, file size: 241 KB, MIME type: image/jpeg)
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Summary
DescriptionPosterization example.jpg | The following is an example of a scenario where posterization may occur, and relates to the image above. A photo saved in JPEG has 256 variations of luminosity in Red, Green and Blue (RGB) in which to derive its colours. This is approximately 16.7 million colours (256*256*256). However, if you were to take this image and save it as a GIF format image, which has a total of only 256 variations of RGB in which to work with, then the subtle transitions in colour and luminosity that your original photo contained may end up in very obvious and aesthetically unpleasing 'jumps' from one shade to another. This is posterization. |
Date | 8 December 2005 (original upload date) |
Source | No machine-readable source provided. Own work assumed (based on copyright claims). |
Author | No machine-readable author provided. Diliff assumed (based on copyright claims). |
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Derivative works of this file: Posterization example 2.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:52, 8 December 2005 | ![]() | 658 × 894 (241 KB) | Diliff | The following is an example of a scenario where posterization may occur, and relates to the image above. A photo saved in JPEG has 256 variations of luminosity in Red, Green and Blue (RGB) in which to derive its colours. This is approximately 16.7 mil |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 13:43, 8 December 2005 |
Color space | sRGB |
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