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  2. Openclipart - Wikipedia

    en.wikipedia.org/wiki/Openclipart

    Openclipart, also called Open Clip Art Library, is an online media repository of free-content vector clip art.The project hosts over 160,000 free graphics and has billed itself as "the largest community of artists making the best free original clipart for you to use for absolutely any reason".

  3. Clip art - Wikipedia

    en.wikipedia.org/wiki/Clip_art

    Examples of computer clip art, from Openclipart. Clip art (also clipart, clip-art) is a type of graphic art. Pieces are pre-made images used to illustrate any medium. Today, clip art is used extensively and comes in many forms, both electronic and printed. However, most clip art today is created, distributed, and used in a digital form.

  4. Binary image - Wikipedia

    en.wikipedia.org/wiki/Binary_image

    Binary images are also called bi-level or two-level. Pixel art made up of two colours is often referred to as 1-bit in reference to the single bit required to store each pixel. [2] The names black-and-white, B&W, monochrome or monochromatic are often used, but can also designate other image types with only one sample per pixel, such as ...

  5. Stress-whitening - Wikipedia

    en.wikipedia.org/wiki/Stress-whitening

    Stress-whitening is where a white line appears along a bend or curve when a material is stressed by bending or punching operations. An example of stress whitening on this package wrapper clip. The appearance of white line indicates that there is an onset of failure of the corresponding material. This phenomenon is known as "stress-whitening".

  6. Blanqueamiento - Wikipedia

    en.wikipedia.org/wiki/Blanqueamiento

    Blanqueamiento in Spanish, or branqueamento in Portuguese (both meaning whitening), is a social, political, and economic practice used in many post-colonial countries in the Americas and Oceania to "improve the race" (mejorar la raza) [1] towards a supposed ideal of whiteness. [2]

  7. Optical brightener - Wikipedia

    en.wikipedia.org/wiki/Optical_brightener

    A white surface treated with an optical brightener can emit more visible light than that which shines on it, making it appear brighter. The blue light emitted by the brightener compensates for the diminishing blue of the treated material and changes the hue away from yellow or brown and toward white.

  8. Skin whitening - Wikipedia

    en.wikipedia.org/wiki/Skin_whitening

    Skin whitening, also known as skin lightening and skin bleaching, is the practice of using chemical substances in an attempt to lighten the skin or provide an even skin color by reducing the melanin concentration in the skin.

  9. Whitening transformation - Wikipedia

    en.wikipedia.org/wiki/Whitening_transformation

    A whitening transformation or sphering transformation is a linear transformation that transforms a vector of random variables with a known covariance matrix into a set of new variables whose covariance is the identity matrix, meaning that they are uncorrelated and each have variance 1. [1]

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