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  2. Pixelization - Wikipedia

    en.wikipedia.org/wiki/Pixelization

    A black rectangular or square box (known as censor bars) may be used to occlude parts of images completely (for example, a black bar covering the eyes instead of the entire face being pixelized). Censor bars were extensively used as a graphic device in the January 2012 protests against SOPA and PIPA .

  3. Bokeh - Wikipedia

    en.wikipedia.org/wiki/Bokeh

    From left to right: an original photo with no bokeh or blur; the same photo with synthetic bokeh effect applied to its background; the same photo with Gaussian blur applied to its background. Bokeh can be simulated by convolving the image with a kernel that corresponds to the image of an out-of-focus point source taken with a real camera.

  4. Fogging (censorship) - Wikipedia

    en.wikipedia.org/wiki/Fogging_(censorship)

    Image in which people's faces have been fogged or blurred out. Fogging, also known as blurring, is used for censorship or privacy.A visual area of a picture or movie is blurred to obscure it from sight.

  5. Miniature faking - Wikipedia

    en.wikipedia.org/wiki/Miniature_faking

    Consequently, the foreground and background are often blurred, with the blur increasing with distance above or below the center of the image. In a photograph of a full-size scene, the DoF is considerably greater; in some cases, it is difficult to have much of the scene outside the DoF, even at the lens's maximum aperture. Thus a difference in ...

  6. Gaussian blur - Wikipedia

    en.wikipedia.org/wiki/Gaussian_blur

    The difference between a small and large Gaussian blur. In image processing, a Gaussian blur (also known as Gaussian smoothing) is the result of blurring an image by a Gaussian function (named after mathematician and scientist Carl Friedrich Gauss). It is a widely used effect in graphics software, typically to reduce image noise and reduce detail.

  7. Bloom (shader effect) - Wikipedia

    en.wikipedia.org/wiki/Bloom_(shader_effect)

    In HDRR images, the effect can be reproduced by convolving the image with a windowed kernel of an Airy disc (for very good lenses), or by applying Gaussian blur (to simulate the effect of a less perfect lens), before converting the image to fixed-range pixels.