调整图像强度值 [英] Adjusting image intensity values

问题描述

我来到了MATLAB中的 imadjust 函数.似乎此功能增强了图像的对比度.但是，此功能的理论基础是什么?换句话说，如果我说文档中提到的此功能可调整图像强度值，这到底是什么意思?对强度值有什么作用?

I came to the imadjust function in MATLAB. It seems that this function enhances the contrast of the image. But, what is the theoretical basis for this function? In other words, if I say that this function as mentioned in the documentation adjusts the image intensity values, what does this exactly mean? What is it doing to the intensity values?

谢谢.

推荐答案

每个像素的公式可能是

J = ((((I - low_in) / (high_in - low_in)) ^ gamma) * (high_out - low_out)) + low_out

如果不使用所有参数，则会自动选择low_in和high_in，以便输出包含其像素的最高值和最低值的1％.

If you leave off all the parameters, low_in and high_in are automatically selected so that the output contains 1% of its pixels at the highest and lowest values.

这篇关于调整图像强度值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！