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Walgreens Mobile App Launches Enhanced Photo Creation Capabilities DEERFIELD, Ill.--(BUSINESS WIRE)-- Walgreens (NYS: WAG) (NAS: WAG) today announced the latest updates to its iPhone mobile app ...
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For example, an enlargement from a certain negative as a 12 x 18 cm (approx. 5 by 7 inch) print may be sufficient for a scrapbook viewed at 50 cm (20 inches), but insufficiently detailed for an A4 print hung on a hallway wall to be viewed at the same distance, though usable at a larger 120 x 180 cm (ten times larger) on a billboard to be viewed ...
Image scaling can be interpreted as a form of image resampling or image reconstruction from the view of the Nyquist sampling theorem.According to the theorem, downsampling to a smaller image from a higher-resolution original can only be carried out after applying a suitable 2D anti-aliasing filter to prevent aliasing artifacts.
Many different techniques can be used during the enlargement process. Two examples of enlargement techniques are dodging and burning. Alternatively (or as well), the negative may be scanned for digital printing or web viewing after adjustment, retouching, and/or manipulation.
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