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  2. Halftone - Wikipedia

    en.wikipedia.org/wiki/Halftone

    In halftone images, this additionally requires preservation of the regular pattern. The same applies to more complex tools like retouching. Many other image processing techniques are designed to operate on continuous-tone images. For example, image compression algorithms are more efficient for those images. [17]

  3. Error diffusion - Wikipedia

    en.wikipedia.org/wiki/Error_diffusion

    When an image has a transition from light to dark, the error-diffusion algorithm tends to make the next generated pixel be black. Dark-to-light transitions tend to result in the next generated pixel being white.

  4. Stochastic screening - Wikipedia

    en.wikipedia.org/wiki/Stochastic_screening

    Shades of gray produced by FM screening. Magnified version of the same image. Stochastic screening or FM screening is a halftone process based on pseudo-random distribution of halftone dots, using frequency modulation (FM) to change the density of dots according to the gray level desired.

  5. Duotone - Wikipedia

    en.wikipedia.org/wiki/Duotone

    A duotone image, made using black and blue in Photoshop. Duotone (sometimes also known as Duplex) is a halftone reproduction of an image using the superimposition of one contrasting color halftone over another color halftone. [1] This is most often used to bring out middle tones and highlights of an image.

  6. Dither - Wikipedia

    en.wikipedia.org/wiki/Dither

    Modest dithering can resolve this without making the image appear grainy. High-end still image processing software commonly uses these techniques for improved display. Another useful application of dithering is for situations in which the graphics file format is the limiting factor.

  7. Comparison of vector graphics editors - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_vector...

    Specific functions of FreeHand include a superior image-tracing operation for vector editing, page layout features within multiple-page documents, and embedding custom print-settings (such as variable halftone-screen specifications within a single graphic, etc.) to each document independent of auxiliary printer-drivers.

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