遥感图像的彩色增强

人眼识别和区分灰度差异的能力是很有限的，一般只能区分二三十级；但识别和区分色彩的能力却大得多，可达数百种甚至上千种。显然，根据人的视觉特点将彩色应用于图像增强中能在很大程度上提高遥感图像目标的识别精度。所以彩色增强成为遥感图像应用处理的一大关键技术，应用十分广泛。

Color Intensification of Remote Sensed Imagery

The ability that people can identify and differentiate the difference of different grayness is very limited, and we can only identify not more than thirty grades of grayness. On the contrary, our eyes are so sensitive to hue that they can distinguish hundreds of different colors. Obviously, by taking color into gray image we can enhance the precision of image interpretation. Therefore, color enhancement has become important key technology in image applying and disposing, and been widely used in this domain.