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2. Contrast (vision) - Wikipedia

   en.wikipedia.org/wiki/Contrast_(vision)

   Contrast (vision) Six renditions of a rocky shore photo with incremental contrast levels, clockwise from bottom left. Contrast is the difference in luminance or color that makes an object (or its representation in an image or display) visible against a background of different luminance or color. The human visual system is more sensitive to ...

3. Gamma correction - Wikipedia

   en.wikipedia.org/wiki/Gamma_correction

   Gamma correction is, in the simplest cases, defined by the following power-law expression: where the non-negative real input value is raised to the power and multiplied by the constant A to get the output value . In the common case of A = 1, inputs and outputs are typically in the range 0–1. A gamma value is sometimes called an encoding gamma ...

4. Color balance - Wikipedia

   en.wikipedia.org/wiki/Color_balance

   In photography and image processing, color balance is the global adjustment of the intensities of the colors (typically red, green, and blue primary colors ). An important goal of this adjustment is to render specific colors – particularly neutral colors like white or grey – correctly. Hence, the general method is sometimes called gray ...

5. Contrast-to-noise ratio - Wikipedia

   en.wikipedia.org/wiki/Contrast-to-noise_ratio

   Contrast-to-noise ratio ( CNR) [ 1] is a measure used to determine image quality. CNR is similar to the metric signal-to-noise ratio (SNR), but subtracts a term before taking the ratio. This is important when there is a significant bias in an image, such as from haze. [ 2] As can be seen in the picture at right, the intensity is rather high ...

6. Adobe's tool to identify edited images comes to Photoshop

   www.engadget.com/adobes-tool-to-identify...

   Adobe Photoshop can now identify 'shopped images. The Content Authenticity Initiative tool can flag deepfakes and credit creators. Adobe has unveiled a new attribution tool for Photoshop that will ...

7. Contrast ratio - Wikipedia

   en.wikipedia.org/wiki/Contrast_ratio

   An LCD technology is dynamic contrast (DC), also called advanced contrast ratio (ACR), and smart contrast ratio (SCR [4]) and various other designations.When there is a need to display a dark image, a display that supports dynamic contrast underpowers the backlight lamp (or decreases the aperture of the projector's lens using an iris), but proportionately amplifies the transmission through the ...

8. Signal-to-noise ratio (imaging) - Wikipedia

   en.wikipedia.org/wiki/Signal-to-noise_ratio...

   Signal-to-noise ratio ( SNR) is used in imaging to characterize image quality. The sensitivity of a (digital or film) imaging system is typically described in the terms of the signal level that yields a threshold level of SNR. Industry standards define sensitivity in terms of the ISO film speed equivalent, using SNR thresholds (at average scene ...

9. Blend modes - Wikipedia

   en.wikipedia.org/wiki/Blend_modes

   Blend modes. A sketch colored digitally with use of several different blend modes in order to preserve the pencil lines and paper texture below the color layers. Blend modes (alternatively blending modes[ 1] or mixing modes[ 2]) in digital image editing and computer graphics are used to determine how two layers are blended with each other.