Hello dear friends, I wonder if anybody knows what edge detection algorithm does tesseract 3.01 utilize when finding connected components? More specifically in edgblob.cpp file there is a function called "extract_edges" in which a function named "block_edges" is called which is responsible to extract edges and find the outline of a block. Correct me if I'm wrong but it seems that "block_edges" doesn't use famous edge-detection methods like Canny, Sobel or Prewitt. Thanks in advance.
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