Please ignore my previous post as I have some progress these days.
- My goal is using OCR module to recognize characters from a 3cm*4cm LED.
- What I did:
1) Combine with Adaptive_threshold module, I can segment text in white with black background as OCR module required. Unfortunately, OCR still could not read the text from LED. Please see program settings as 'OCR-LED.robo'
2) To verify if it is because the blobs are connected/merged, I use blob_label module, please see attachment ('blob-lable result') for reference.
3) Output after adaptive threshold is also attached as 'after threshold'
Please advise. Appreciate it.