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I have extracted a image document from tesseract and It has extracted successful. But I am not able to understand coordinate of extracted document.
Problem description: -
It showing coordinates but let me know that are these coordinates representing pixel or something else. These are in four like title="bbox 10 13 43 46" , so what is 10, 13 43 and 46. What position they are representing
complete code after extracting
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>
</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name='ocr-system' content='tesseract'/>
</head>
<body>
<div class='ocr_page' id='page_1' title='image "D:\ABC.tif"; bbox 0 0 464 101'>
<div class='ocr_carea' id='block_1_1' title="bbox 10 13 330 55">
<p 1class='ocr_par'>
<span class='ocr_line' id='line_1_1' title="bbox 10 13 330 55">
<span class='ocr_word' id='word_1_1' title="bbox 10 13 43 46">
<span class='ocrx_word' id='xword_1_1' title="x_wconf -1"><strong>hi</strong></span>
</span>
<span class='ocr_word' id='word_1_2' title="bbox 148 13 268 47">
<span class='ocrx_word' id='xword_1_2' title="x_wconf -1"><strong>whats</strong></span>
</span>
<span class='ocr_word' id='word_1_3' title="bbox 283 22 330 55">
<span class='ocrx_word' id='xword_1_3' title="x_wconf -1"><strong>up</strong></span>
</span>
</span>
</p>
</div>
</div>
</body>
</html>
504
Tesseract does various image processing operations internally (using the Leptonica library) before doing the actual OCR. It generally does a very good job of this, but there will inevitably be cases where it isn't good enough, which can result in a significant reduction in accuracy.
Tesseract reads only image files, not pdf. You can convert PDF to image (tif, png) and OCR those. Or use wrappers that use tesseract.
Python Tesseract 4.0 OCR: Recognize only Numbers / Digits and exclude all other Characters. Googles Tesseract (originally from HP) is one of the most popular, free Optical Character Recognition (OCR) software out there. It can be used with several programming languages because many wrappers exist for this project.
Well for anybody who still is wondering how the coordinate system is working, i finally found it and this is like
10 13 43 46 startx, starty, endx, endy
if you want to find width and height of the word that would be
width = endx - startx, height = endy - starty
split the string with ' ' and then eliminate bbox and there you go..
151
Maybe this will help someone in the future. I think the image speaks for itself.
You can compute the height or top distance (for css) from those values (eg. height = y1-y0)
27
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