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2. Luminance HDR - Wikipedia

   en.wikipedia.org/wiki/Luminance_HDR

   Prerequisite of HDR photography are several narrow-range digital images with different exposures. Luminance HDR combines these images and calculates a high-contrast image. In order to view this image on a regular computer monitor, Luminance HDR can convert it into a displayable LDR image format using a variety of methods, such as tone mappin

3. Histogram equalization - Wikipedia

   en.wikipedia.org/wiki/Histogram_equalization

   This allows for areas of lower local contrast to gain a higher contrast. Histogram equalization accomplishes this by effectively spreading out the highly populated intensity values which are used to degrade image contrast. The method is useful in images with backgrounds and foregrounds that are both bright or both dark. In particular, the ...

4. Tone mapping - Wikipedia

   en.wikipedia.org/wiki/Tone_mapping

   Tone mapped high-dynamic-range (HDR) image of St. Kentigerns Roman Catholic Church in Blackpool, Lancashire, England, UK. Tone mapping is a technique used in image processing and computer graphics to map one set of colors to another to approximate the appearance of high-dynamic-range (HDR) images in a medium that has a more limited dynamic range.

5. HSL and HSV - Wikipedia

   en.wikipedia.org/wiki/HSL_and_HSV

   Fig. 1. HSL (a–d) and HSV (e–h). Above (a, e): cut-away 3D models of each. Below: two-dimensional plots showing two of a model's three parameters at once, holding the other constant: cylindrical shells (b, f) of constant saturation, in this case the outside surface of each cylinder; horizontal cross-sections (c, g) of constant HSL lightness or HSV value, in this case the slices halfway ...

6. Reverse-contrast typefaces - Wikipedia

   en.wikipedia.org/wiki/Reverse-contrast_typefaces

   The contrast has been increased and the axis of the contrast made more purely vertical. A conventional slab-serif typeface, Rockwell. [c] The serifs have been thickened and the contrast is minimal. Starting in the seventeenth century, typefounders developed what are now called transitional and then "modern" or Didone types. These typefaces had ...

7. Phase-contrast imaging - Wikipedia

   en.wikipedia.org/wiki/Phase-contrast_imaging

   In the field of transmission electron microscopy, phase-contrast imaging may be employed to image columns of individual atoms; a more common name is high-resolution transmission electron microscopy. It is the highest resolution imaging technique ever developed, and can allow for resolutions of less than one angstrom (less than 0.1 nanometres).