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IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
IMPACT Final Conference - NCSR - Border detection
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IMPACT Final Conference - NCSR - Border detection

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IMPACT Final Conference - NCSR - Border detection

IMPACT Final Conference - NCSR - Border detection

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    • 1. IMPACT Tools Developed by NCSR IMPACT Final Conference 2011 24-25 October 2011, London, UK B. Gatos Computational Intelligence Laboratory Institute of Informatics and Telecommunications National Center for Scientific Research ( NCSR ) "Demokritos" GR-153 10 Agia Paraskevi, Athens, Greece
    • 2. Border_Detection_v4 [0|1] [infile] [outfile1] [outfile2] parameter [0|1]: 0 -> only border removal,   1 -> border removal & page split parameter [infile]: Input filename (b/w or gray scale image) parameters [outfile1] [outfile2]: Output filenames (b/w or gray scale image) + web service implementation IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
    • 3. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK <ul><li>We use projection profiles and a connected component labelling process to detect black borders </li></ul><ul><li>Signal cross-correlation is used in order to verify the detected noisy text areas </li></ul>
    • 4. N. Stamatopoulos, B. Gatos, T. Georgiou, “ Page frame detection for double page document images ”, 9th IAPR International Workshop on Document Analysis Systems (DAS 2010) , pp. 401-408, Cambridge, MA, USA, June 2010. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK <ul><li>We remove small noisy components </li></ul><ul><li>We detect vertical page zones based on vertical white run projections </li></ul><ul><li>Then, for every vertical zone we detect horizontal page zones based on horizontal white run projections. </li></ul>
    • 5. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
    • 6. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
    • 7. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
    • 8. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
    • 9. 1 (Bad) 2 3 4 5 (Good) Av=4.3 Av=3.6 1. Final image almost destroyed! 2. Big part of text is missing 3. Small part of text is missing 4. All text is there, border not completely removed. 5. All text is there, border has been completely removed. 1. Final image almost destroyed! 2. Big part of text is missing 3. Small part of text is missing 4. All text is there, border not completely removed. 5. All text is there, border has been completely removed. 21709 images to test border removal 3003 newspaper images to test border removal
    • 10. 1 (Bad) 2 3 4 5 (Good) Av=3.3 1. Page split fails! 2 Page split with problems. 3. Page split is correct, large parts of noise remains or text is removed 4. Page split is correct, small parts of noise remains or text is removed 5. Page split is correct, only black noise has been removed IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK 3009 images to test page split (results on 50%)
    • 11. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK SET A: 38718 randomly selected historical images BL BNE BNF BSB JSI NLB ONB TOTAL #images 3632 11126 12251 4784 4430 706 1789 38718 IMPACT Prec (%) 99.49 99.89 98.88 98.10 98.91 99.86 97.29 99.08 Rec (%) 98.83 99.26 99.40 96.07 99.06 99.73 97.82 98.79 FM (%) 99.16 99.58 99.14 97.07 98.99 99.79 97.55 98.93 D.X Le Prec (%) 94.98 99.68 98.67 97.70 97.35 99.80 97.19 98.30 Rec (%) 99.31 90.65 99.24 95.58 99.21 99.81 99.19 96.63 FM (%) 97.10 94.95 98.26 96.63 98.27 99.80 98.18 97.30 BookRestorer Prec (%) 91.13 96.88 98.08 97.29 94.50 99.79 95.12 96.47 Rec (%) 99.56 91.57 99.77 97.43 99.40 99.85 99.61 97.06 FM (%) 95.16 94.15 98.91 97.36 96.89 99.82 97.31 96.76 WiseBook Prec (%) 86.93 88.57 91.20 95.76 90.69 99.46 80.37 90.20 Rec (%) 98.37 99.47 99.10 96.40 97.29 98.45 98.63 98.56 FM (%) 92.30 93.71 94.99 96.08 93.87 98.95 88.57 94.20 ScanFix Prec (%) 81.65 92.87 91.29 95.62 91.00 99.24 84.52 91.17 Rec (%) 94.97 98.66 98.66 97.81 95.66 80.81 96.98 97.46 FM (%) 87.81 95.68 94.83 96.70 93.27 89.08 90.32 94.21
    • 12. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK SET B: 22383 images with noisy black border BL BNE BNF BSB JSI NLB ONB TOTAL #images 1631 7543 7677 2417 1416 315 1384 22383 IMPACT Prec (%) 98.94 99.88 98.29 96.86 98.01 99.98 96.63 98.62 Rec (%) 98.18 99.27 99.26 93.14 99.15 99.87 98.24 98.46 FM (%) 98.56 99.57 98.77 94.96 98.58 99.92 97.43 98.54 D.X Le Prec (%) 88.89 99.58 97.98 96.08 93.20 99.85 96.48 97.28 Rec (%) 99.05 86.64 98.86 91.53 99.09 99.97 99.06 94.01 FM (%) 93.70 92.66 98.42 93.75 96.05 99.91 97.75 95.62 BookRestorer Prec (%) 80.30 95.46 97.00 95.27 84.26 99.83 93.76 94.11 Rec (%) 99.36 93.02 99.68 95.22 99.56 99.96 99.62 96.92 FM (%) 88.82 94.22 98.32 95.24 91.27 99.89 96.60 95.50 WiseBook Prec (%) 70.98 83.24 86.10 92.24 72.44 99.18 74.77 83.32 Rec (%) 99.38 99.49 99.58 95.19 98.36 98.61 99.09 98.94 FM (%) 82.81 90.64 92.35 93.69 83.43 98.89 85.23 90.46 ScanFix Prec (%) 59.23 89.57 86.23 91.96 73.38 99.04 80.14 85.00 Rec (%) 95.42 98.78 99.03 96.54 98.55 80.61 97.67 98.04 FM (%) 73.09 93.95 92.19 94.19 84.12 88.88 88.04 91.05
    • 13. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK 3009 images to test page split
    • 14. IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK 458 images from BNF to test page split

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