Noise cancellation

[FloCiaglia]

Use the tracing of the characters that we perform in char_detection to remove the noise from the single box images.

I have run into a problem: We do the tracing on the field image. Therefore, the coordinates that the tracing are in are related to the whole field. When we use the tracing to clean the single character image from noise, the xy-coordinates don't match with the single char image. This issue results in IndexError: image index out of range.
I am not sure how to fix this problem