Devashish Prasad
Devashish Prasad
The text on your metal is not embossed, its engraved. So, you need to filter it more. Try tuning the parameters of canny. Also try to change dilation and erosion...
This happens when find_contours is not able to find any find any contours resulting the cnts empty. Please make sure the image is processed properly. And also share the image
This happened because tesseract was not able to find any text to perform OCR in the image. Here are the things you can do - 1) Try printing the contents...