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Cropping is the removal of unwanted outer areas from a photographic or illustrated image. The process usually consists of the removal of some of the peripheral areas of an image to remove extraneous visual data from the picture, improve its framing, change the aspect ratio, or accentuate or isolate the subject matter from its background.
Instead, you can list the image without actually displaying it. For example, let's say this image was a fair use image: If it were a fair use image (it isn't, it is in the public domain as a work of the U.S. government), then displaying it on one's userspace (or here in the Wikipedia project space) would be against policy. So, alternatively one ...
For calculating the image containing only the background, a series of preceding images are averaged. For calculating the background image at the instant t: (,,) = = (,,) where N is the number of preceding images taken for averaging. This averaging refers to averaging corresponding pixels in the given images.
Belgium's Henri Starc began imparting dramatic film form to still images in 1936, and his lyric World of Paul Delvaux (1947) is an acknowledged classic. Paul Haesaerts made Rubens in 1948. Americans Paul Falkenberg and Lewis Jacobs made Lincoln Speaks at Gettysburg entirely out of nineteenth-century engravings, 1950. Ben Berg and Herbert Block ...
The technique has been used in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture, and video game industries. A color range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene.
For fair use images: with no non-free use rationale if the image was uploaded after May 4, 2006, tag the image as {{}}.; with vague or inappropriate justifications that do not meet non-free content guidelines, tag the image as {{subst:dfu|reason that the image does not meet the criteria}}.