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Histogram equalization information


Histogram equalization is a method in image processing of contrast adjustment using the image's histogram.

A histogram which is zero apart from a central area containing strong peaks is transformed by stretching the peaked area to fill the entire x-axis.
Histograms of an image before and after equalization.

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Histogram equalization

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Histogram equalization is a method in image processing of contrast adjustment using the image's histogram. This method usually increases the global contrast...

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Adaptive histogram equalization

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Adaptive histogram equalization (AHE) is a computer image processing technique used to improve contrast in images. It differs from ordinary histogram equalization...

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Histogram matching

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well-known histogram equalization method is a special case in which the specified histogram is uniformly distributed. It is possible to use histogram matching...

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Image histogram

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matrices. Color histogram, a multidimensional histogram of the distribution of color in an image Curve (tonality) Histogram equalization Histogram matching Image...

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Color normalization

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normalization, however it was not found to perform significantly better. Histogram equalization is a non-linear transform which maintains pixel rank and is capable...

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Equalization

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and sound processing Equalizing basin, a reservoir used to regulate water flow below a dam Histogram equalization RIAA equalization, the RIAA specification...

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Digital image processing

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from an image is usually what we called Histogram equalization. In discrete time, the area of gray level histogram is ∑ i = 0 k H ( p i ) {\displaystyle...

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Shadow and highlight enhancement

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processing algorithms such as adaptive histogram equalization or contrast limiting adaptive histogram equalization (CLAHE). HDR PhotoStudio — an HDR image...

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List of algorithms

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Contrast Enhancement Histogram equalization: use histogram to improve image contrast Adaptive histogram equalization: histogram equalization which adapts to...

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YIQ

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a histogram equalization directly to the channels in an RGB image would alter the color balance of the image. Instead, the histogram equalization is...

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AHE

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in the Tuamotu Archipelago Ahe Airport (IATA code AHE) Adaptive histogram equalization Ahepe (House of the Ahe), village near Togo, Africa Alberta Hospital...

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Outline of computer vision

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of computer vision Image denoising Image histogram Inpainting Super-resolution imaging Histogram equalization Tone mapping Retinex Gamma correction Anisotropic...

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Outline of photography

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color RGB color model Image Compression Gaussian blur Image histogram Histogram equalization Image scaling Logarithms Noise Pixel Posterization DNG GIF...

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Darktable

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order to apply additional processing steps outside of Darktable. Multiple histogram types are available, all with individually selectable red, green and blue...

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FFmpeg

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(curves, eq) Histograms and visualization CIE Scope (ciescope) Vectorscope (vectorscope) Waveform monitor (waveform) Color histogram (histogram) Drawing OCR...

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Kurtosis

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identification of a nonminimum phase system: Blind adjustment of a linear equalizer in data communications", IEEE Transactions on Automatic Control, 25 (3):...

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Smaart

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(Logarithmic), ETC (Energy Time Curve), as well as Frequency, Spectrograph, and Histogram graphs. Impulse Response mode also includes a suite of acoustical intelligibly...

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Polygon partition

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n is the number of vertices of the polygon. In the special case of a "histogram polygon", the complexity improves to O ( n 3 ) {\displaystyle O(n^{3})}...

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Loss function

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budgets for 16 Westfalian universities and the European subsidies for equalizing unemployment rates among 271 German regions. In some contexts, the value...

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Baudline

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Waveform, and Histogram displays Fourier, Correlation, and Raster transforms SNR, THD, SINAD, ENOB, SFDR distortion measurements Channel equalization Function...

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Harmonic mean

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biased upwards and cannot be numerically justified, since it is based on equalized earnings; just as vehicles speeds cannot be averaged for a roundtrip journey...

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Underwater computer vision

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firstly reduces the color cast by equalizing the color values. Then it enhances contrast by stretching the red histogram towards the maximum and finally...

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