图像增强是指按特定的需要突出一幅图像中的某些信息，同时，消弱或去除某些不需要的信息的处理方法。其主要目的是处理后的图像对某些特定的应用比原来的图像更加有效。图像增强技术主要有直方图修改处理、图像平滑化处理、图像尖锐化处理和彩色处理技术等。-Image enhancement refers to the need to highlight a specific image in some of the information, the same time, weaken or remove some unwanted information approach. Its main purpose is the image after the application of certain more effective than the original image. Histogram of image enhancement technologies include modified processing, image smoothing processing, image processing and color processing sharpening technology.