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Images can often be improved – or even transformed – by using graphics software such as Photoshop or the free GIMP and Paint.NET applications. Many other programs also have photo-enhancing tools, including facilities for semi-automatic image enhancement, so that you need only click a button, or choose a thumbnail, to have a positive effect on image quality.
There's no automatic way to move an image from Wikipedia to Commons. The standard way is to download the image to your computer (often right-clicking the image gives you this option), and then upload it to Commons. This procedure gives you a chance to give the image a better (longer, more descriptive) name.
Digital photograph restoration uses image editing techniques to remove undesired visible features, such as dirt, scratches, or signs of aging. People use raster graphics editors to repair digital images, or to add or replace torn or missing pieces of the physical photograph.
The resulting image is larger than the original, and preserves all the original detail, but has (possibly undesirable) jaggedness. The diagonal lines of the "W", for example, now show the "stairway" shape characteristic of nearest-neighbor interpolation. Other scaling methods below are better at preserving smooth contours in the image.
6. Scramble the fingerprint image to gain the scrambled watermark WS (i, j). 7. Re-formulate the scrambled watermark image into a vector of zeros and ones. 8. Two uncorrelated pseudorandom sequences are generated from the key obtained from the palm vein.
1) Limit your online presence: Reduce the amount of personal information, especially high-quality images and videos, available on social media by adjusting privacy settings.