gamutkiterjesztés

Gamut kiterjesztés, often translated as gamut extension, is a technique used in digital imaging and color reproduction to represent or display colors that lie outside the standard gamut of a particular device or color space. Gamuts define the range of colors that a device can capture, display, or print. When content contains colors that are more vibrant or saturated than a device can reproduce, a color transformation process known as gamut kiterjesztés is applied.

The primary goal of gamut kiterjesztés is to preserve the visual appearance of the original image as much as possible, even when the target device has a smaller color space. This involves mapping colors from a larger gamut (e.g., a wide-gamut display) to a smaller gamut (e.g., a standard sRGB monitor or a printer). Common methods include different rendering intents such as perceptual, saturation, relative colorimetric, and absolute colorimetric. Each intent attempts to balance hue, saturation, and lightness changes to achieve the most pleasing or accurate result depending on the application.

Without gamut kiterjesztés, colors that fall outside the target gamut would typically be clipped, meaning they would be mapped to the nearest reproducible color. This can lead to a loss of detail and vibrancy, particularly in highly saturated areas of an image. Gamut kiterjesztés aims to mitigate these undesirable effects by intelligently adjusting the out-of-gamut colors. This process is crucial in fields like photography, graphic design, and printing to ensure color consistency across different media and devices.