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X PixMap (XPM) is an image file format used by the X Window System, created in 1989 by Daniel Dardailler and Colas Nahaboo working at Bull Research Center at Sophia Antipolis, France, and later enhanced by Arnaud Le Hors.
A 2-bit indexed color image. The color of each pixel is represented by a number; each number (the index) corresponds to a color in the color table (the palette).. In computing, indexed color is a technique to manage digital images' colors in a limited fashion, in order to save computer memory and file storage, while speeding up display refresh and file transfers.
The median filter is a non-linear digital filtering technique, often used to remove noise from an image or signal. Such noise reduction is a typical pre-processing step to improve the results of later processing (for example, edge detection on an image).
In mathematical morphology and digital image processing, a top-hat transform is an operation that extracts small elements and details from given images.There exist two types of top-hat transform: the white top-hat transform is defined as the difference between the input image and its opening by some structuring element, while the black top-hat transform is defined dually as the difference ...
Just like every other page on Wikipedia, the image description page can be edited by anyone. Just click "edit this page" while looking at the image page. Did you forget to say what the license or source for the image is when you uploaded it? Don't re-upload the image—just edit the image description page and add the licensing information!
Bitmap image data (either embedded or in an external file) along with scale and position information; Text to be rendered (along with size, position, orientation, and color) Clipping information, if only part of a shape or bitmap image should be rendered; Transparency and compositing information for rendering overlapping shapes
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