Kontrasztkorrekciókra

Kontrasztkorrekciókra is a Hungarian term referring to contrast correction. In image processing and photography, contrast refers to the difference in luminance or color that makes an object distinguishable from other objects and the background. Contrast correction is the process of adjusting this difference to improve the visual quality of an image.

There are various methods for applying contrast correction. Simple contrast adjustments typically involve stretching or compressing the range of pixel intensity values. This can be achieved by applying a linear transformation to the pixel values, effectively increasing or decreasing the overall contrast. More sophisticated techniques include histogram equalization, which aims to distribute pixel intensities more evenly across the entire range, thereby enhancing local contrast. Adaptive histogram equalization is an even more advanced method that applies equalization to localized regions of the image, which can be particularly effective for images with varying illumination conditions.

The goal of contrast correction is often to make details more visible, especially in areas that are too dark (underexposed) or too bright (overexposed). Proper contrast correction can significantly improve the perceived clarity, depth, and overall aesthetic appeal of an image. However, over-correction can lead to a loss of detail in the highlights or shadows, or result in an unnatural appearance. Therefore, contrast correction is usually applied with care, often with user control or through automated algorithms designed to find an optimal balance.