I try to make text in image cleaner and clearer before run OCR with tesseract. In this link, they provided a good scripts to do it by ImageMagicK. I wonder is possible to convert this script and function into OpenCV code? For example, the script with arguments like this:
-g -e none -f 15 -o 20
From the explanation:
-g ...................... convert document to grayscale before enhancing
-e .... enhance ......... enhance image brightness before cleaning;
choices are: none, stretch or normalize;
default=none
-f .... filtersize ...... size of filter used to clean background;
integer>0; default=15
-o .... offset .......... offset of filter in percent used to reduce noise;
integer>=0; default=5
How can I do the same in OpenCV code? As I am a newbie in OpenCV, I just only know how to convert to grayscale. Any help would be appreciated.
