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Input RangeMapping Function
[0 \dots 255][0 \dots 255]
Linear Equalization

Linear equalization with 1.00% is the default for new scenes. Commonly it displays images with a higher contrast as without image equalization.

Linear equalization maps each color Red, Green, and Blue (RGB) from an input range [c_\mathrm{min} \dots c_\mathrm{max}]to the available screen intensity range [0 \dots 255] by a linear mapping. The input range can be modified by the percentage parameter p. The input range is computed such that p percent of the pixels are not part of the input range. In case p=0 this means the range of used color values is stretched to the range [0….255]. For p>0the mapping ignores \frac {p}{2} \% of the darkest pixels and \frac {p}{2} \% of the brightest pixels. In many cases a small value of p lead to better results because the available color range can be better used for the relevant data by ignoring the outliers.

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Page last modified on 12 March 2010 at 05:06 AM