次下载文档主要是图像灰度相关的变换，包括二值化、彩色到灰度、对数函数非线性变换、进行非线性拉伸、线性变换、负相变换、指数变换等-Downloads document is mainly related to image intensity transformation, including binary, color to grayscale, logarithmic function, nonlinear transformation, non-linear stretching, linea