sRGBlineárizációt

sRGB linearizáció refers to the process of converting sRGB color values from their nonlinear gamma-encoded representation to a linear color space. The sRGB standard, widely used for displays and image formats, employs a gamma correction curve to approximate the nonlinear response of CRT displays and to optimize for perceived brightness. This nonlinearity means that the numerical values representing colors do not directly correspond to the amount of light emitted.

Linearizing sRGB is often a necessary step in image processing workflows, particularly for operations that are physically based, such as blending, lighting simulations, or color grading. In a linear color space, pixel values are directly proportional to the amount of light. This allows for more accurate and predictable results when performing mathematical operations on color data.

The conversion from sRGB to linear involves applying an inverse gamma function. For values within the range of 0.04045, the transformation is approximately linear, while for values above this threshold, a power function with an exponent of approximately 2.4 is used. Conversely, converting back from a linear space to sRGB involves applying the standard sRGB gamma correction. Understanding sRGB linearizáció is crucial for achieving accurate color reproduction and performing reliable image manipulations across different software and hardware.