I am working on a project. I want to segment a logo from a car and the picture's size is 3648*2432. The logo is selected by the red rectangle.
I extracted this area and turn into gray level. The area's size is 249*173. Then, I use histogram equalize to enhance the edge. Finally, I use adaptive canny to find edge.
However, the result is not perfect. So, I used median filter to smooth the left picture. The result is as following.
I remove the small parts.
The result has been improved, but it is also not good. Besides, I have tried bilateral filter, mean filter and Gaussian filter, but the result is not good, too. I know that after passing histogram equalize, the noise can be enhance. But, in some case, low contrast, I need to adapt this step to enhance my picture. Is any one who can provide me any different comment? Thank you very much.