此程序为伽马校正，对图像的伽马曲线进行编辑，以对图像进行非线性色调编辑的方法，检出图像信号中的深色部分和浅色部分使两者比例增大，从而提高图像对比度效果-This program is gamma correction, the image of the gamma curve editing, to the image of the non-linear tone editing method, the detection of the dark part of the image signal