What is Local Contrast (and How Can I Use It)? With Affinity Photo

In this paper we present a local contrast enhancement method driven by a scalar objective function that estimates the local average contrast of an image.

Local contrast enhancement is a technique to enhance the visibility of local details of an image by increasing the contrast in local regions.

The plugin Enhance Local Contrast (CLAHE) implements the method Contrast Limited Adaptive Histogram Equalization 1 for enhancing the local contrast of an image.

In this paper, we propose a global and local contrast adaptive enhancement method, which can improve the con- trast and preserve the naturalness of the ...

Based on the aforementioned technical theories, Local Contrast Enhancer aids in enhancing the contrast effects generated by Global Contrast ...

Local contrast enhancement attempts to increase the appearance of large-scale light-dark transitions, similar to how sharpening with an unsharp mask increases ...

The technique is based on a logarithmic mapping function that is adapted to the luminance characteristics of the neighborhood of each pixel.

B = localcontrast(A, edgeThreshold, amount) enhances or flattens the local contrast of A by increasing or smoothing details while leaving strong edges ...

For local enhancement, the proposed method optimizes for the contrast sensitivity of the human eye by adjusting the local luminance gradient ...

In addition, image contrast in local areas can be enhanced by modifying a local histogram, such as local histogram equalization/stretching and nonlinear mapping ...