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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.
The effect of gamma correction on an image: the original image was taken to varying powers, showing that powers larger than 1 make the shadows darker, while powers smaller than 1 make dark regions lighter.
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Software used for producing HDR tone mapped images. The main article for this category is High-dynamic-range imaging . Pages in category "HDR tone mapping software"
The Grand Canyon image is the only one worth keeping from the Gallery IMHO, because it shows an example of direct (i.e. non gradient-based) tone mapping, which can be compared with the gradient-based tone mapping examples given in the sidebar pictures of the church and the beach, but I think the others should probably be deleted.
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In the theory of photography, tone reproduction is the mapping of scene luminance and color to print reflectance or display luminance, [1] with the aim of subjectively "properly" reproducing brightness and "brightness differences". [2] The reproduction of color scenes in black-and-white tones is one of the long-time concerns of photographers. [3]
Photo and curve dialog in the GIMP Photo and curve dialog with red colour emphasized in the lighter end of the spectrum.. In image editing, a curve is a remapping of image tonality, specified as a function from input level to output level, used as a way to emphasize colours or other elements in a picture.