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The contrast ranges from black at the weakest intensity to white at the strongest. [1] Grayscale images are distinct from one-bit bi-tonal black-and-white images, which, in the context of computer imaging, are images with only two colors: black and white (also called bilevel or binary images). Grayscale images have many shades of gray in between.
Monochrome photography is photography where each position on an image can record and show a different amount of light, but not a different hue. It includes all forms of black-and-white photography, which produce images containing shades of neutral grey ranging from black to white. [ 1] Other hues besides grey, such as sepia, cyan, blue, or ...
YCbCr. A color image and its Y′, C B and C R components. The Y′ image is essentially a greyscale copy of the main image. YCbCr, Y′CbCr, or Y Pb/Cb Pr/Cr, also written as YCBCR or Y′CBCR, is a family of color spaces used as a part of the color image pipeline in video and digital photography systems. Y′ is the luma component and C B and ...
Wratten number. Wratten numbers are a labeling system for optical filters, usually for photographic use comprising a number sometimes followed by a letter. The number denotes the color of the filter and its spectral characteristics, and these numbers can be grouped into broad categories, but the numbering system is arbitrary within a group and ...
Sepia toning is a chemical process used in photography which changes the appearance of black-and-white prints to brown. [2] [6] The color is now often associated with antique photographs. Most photo graphics software programs and many digital cameras include a sepia tone filter to mimic the appearance of sepia-toned prints. [2] [7]
Film colorization ( American English; or colourisation [ British English ], or colourization [ Canadian English and Oxford English ]) is any process that adds color to black-and-white, sepia, or other monochrome moving-picture images. It may be done as a special effect, to "modernize" black-and-white films, or to restore color segregation.
Colored filters used to enhance contrast for black and white photography include a letter (Y, O, or R) and a similar wavelength cutoff: for example, R60 is a red filter with a step-like transmission function at 600 nm. For other filters, the alternate Wratten name is used (for example, X0 and X1 for green filters). [5]
This is intended for portraits that convert color images to black-and-white. [6] Stuff ' s Sam Kieldsen described it as "a black-and-white ink sketch filter," while The Telegraph ' s Pramita Ghosh and Riddhima Khanna said it was "bold and heavy B&W strokes" suggesting not to use pictures with bad lighting.