gammakorrigeras

Gammakorrigeras is a Swedish term that translates to "gamma corrected" in English. It refers to the process of adjusting the luminance values of an image to compensate for the non-linear response of display devices, such as monitors, to electrical signals. Most displays do not reproduce brightness linearly, meaning that if you double the input signal, the output brightness does not double. This non-linearity is often described by a gamma curve.

Gamma correction is applied to ensure that images appear consistent across different displays and to accurately represent the intended brightness levels. Without gamma correction, images might appear too dark or too bright on certain devices. The gamma value itself is a number that represents the degree of correction applied. A gamma value of 1.0 is considered linear. Values greater than 1.0 typically lighten an image, while values less than 1.0 darken it, though the exact effect can depend on the specific implementation and the original image data.

In digital imaging and video, gamma correction is a crucial step in the display pipeline. It's often handled by the operating system, graphics drivers, or image editing software. The goal is to transform the image data so that when it's processed by the display's inherent gamma curve, the final displayed image matches the original intent. This is particularly important for tasks where accurate color and brightness representation are critical, such as photography, graphic design, and film production. Understanding gamma correction helps in achieving consistent visual results across various viewing environments.