Introduction - If you have any usage issues, please Google them yourself
1. The image histogram equalization, so as to achieve the purpose of enhancing the image of change, before and after the image histogram . 2. The image added some noise (such as salt and pepper noise, etc.), the use of low-pass filter and median filter for image smoothing, respectively. 3. Homomorphic image enhancement: lighting component and the reflection component of homomorphic filtering.