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  2. Image editing - Wikipedia

    en.wikipedia.org/wiki/Image_editing

    Image editors may feature a number of algorithms which can add or remove noise in an image. Some JPEG artifacts can be removed; dust and scratches can be removed and an image can be de-speckled. Noise reduction merely estimates the state of the scene without the noise and is not a substitute for obtaining a "cleaner" image.

  3. Wikipedia:How to improve image quality - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:How_to_improve...

    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.

  4. Perspective control - Wikipedia

    en.wikipedia.org/wiki/Perspective_control

    Picture of Notre Dame de Reims showing perspective distortion The same picture corrected. Perspective control is a procedure for composing or editing photographs to better conform with the commonly accepted distortions in constructed perspective. The control would: make all lines that are vertical in reality vertical in the image.

  5. Chroma key - Wikipedia

    en.wikipedia.org/wiki/Chroma_key

    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 colour range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene.

  6. LiveQuartz - Wikipedia

    en.wikipedia.org/wiki/LiveQuartz

    Background eraser and paint bucket tool Background eraser will remove all the pixels in the layer having the same color as the one found on the mouse down click. Color tolerance is adjusted by maintaining mouse clicked and moving further from the initial point. Paint Bucket will fill the clicked color with the tool color.

  7. Photograph manipulation - Wikipedia

    en.wikipedia.org/wiki/Photograph_manipulation

    The image in question was a fraudulent composite image of John Kerry taken on June 13, 1971, and Jane Fonda taken in August 1972 sharing the same platform at a 1971 antiwar rally, the latter of which carried a fake Associated Press credit with the intent to change the public's perspective of reality. [40]

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