Post on 18-Jan-2015
description
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
24-25 October 2011, London, UK
IMPACT Tools Developed by NCSR
IMPACT Final Conference 2011
B. Gatos Computational Intelligence LaboratoryInstitute of Informatics and TelecommunicationsNational Center for Scientific Research (NCSR) "Demokritos"GR-153 10 Agia Paraskevi, Athens, Greece
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
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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 implementationIMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
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We use projection profiles and a connected component labelling process to detect black borders
Signal cross-correlation is used in order to verify the detected noisy text areas
IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
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We remove small noisy components
We detect vertical page zones based on vertical white run projections
Then, for every vertical zone we detect horizontal page zones based on horizontal white run projections.
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
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
5IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
6IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
7IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
8IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
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21709 images to
test border removal 3003 newspaper images to
test border removal
1 (Bad) 2 3 4 5 (Good)
1 (Bad) 2 3 4 5 (Good)
Av=4.3Av=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.
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
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3009 images to
test page split (results on 50%)
1 (Bad) 2 3 4 5 (Good)
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
removed4. 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
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
11IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
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
SET A: 38718 randomly selected historical images
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
12IMPACT 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
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
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3009 images to
test page split
IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK
IMPACT is supported by the European Community under the FP7 ICT Work Programme. The project is coordinated by the National Library of the Netherlands.
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458 images from BNF to
test page split
IMPACT Tools Developed by NCSR - IMPACT Final Conference 2011, 24-25 October, London, UK