How do I threshold this Image correctly?
Hello. I'm trying to threshold this image to get the characters more visible. I've used OTSU threshold but I don't get good results because when I convert the image to gray it is difficult to find a good threshold value. Would you please give me some ideas? Can I threshold an image on another colorspace ? thank you and sorry for my english.
You should treshold in the RGB or HSV color space if all your input images are that blue!
Try adaptive thresholding