matlab - Adjusting image intensity values -

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i came imadjust function in matlab. seems function enhances contrast of image. but, theoretical basis function? in other words, if function mentioned in documentation adjusts image intensity values, mean? doing intensity values?

thanks.

the formula each pixel be

j = ((((i - low_in) / (high_in - low_in)) ^ gamma) * (high_out - low_out)) + low_out

if leave off parameters, low_in , high_in automatically selected output contains 1% of pixels @ highest , lowest values.


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