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Restoration of Digitized Old Paintings & Manuscripts

Restoration of Digitized Old Paintings & Manuscripts. Varun Varshney (200701085) Siddharth Kherada (200702048). Restoration of Old Paintings :Crack Removal. Process Diagram:--. Crack Detection & Crack Classification:. Crack detection(top hat transform)

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Restoration of Digitized Old Paintings & Manuscripts

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  1. Restoration of Digitized Old Paintings & Manuscripts VarunVarshney (200701085) SiddharthKherada (200702048)

  2. Restoration of Old Paintings :Crack Removal Process Diagram:--

  3. Crack Detection & Crack Classification: • Crack detection(top hat transform) • Crack classification( gaussian classifier) Crack detection Crack classification : Gaussian Before classification : Crack :3662, brush:816, undecided:3607 After classification : Crack :6739, brush:1346, undecided:0

  4. Brush strokes are still intact whereas cracks are reduced Results (MTM filter)

  5. Results with other images of Byzantine era

  6. Restoration of Old Manuscripts

  7. 1)Foxing Detection: Operate on Chrominance Red(Cb). Threshold for Binary Image 2)Detail Image Extraction: Rational Filter To get Ylp. Yhp=Y-Ylp+K K determined Using mean & Otsu’s threshold Process Diagram:Foxing Removal Original 4)Color Filtering This is done by using median of non foxed Pixels. 3)Processing Of ‘Fox’ image & Merging withYhp. Processing using RFFfox. Merging using Ffox and original image Final DeFoxed

  8. 1 2 3 1)Original Image 2)Result in paper 3)Our Result Foxing Removal :Results Page Enhancement (to be done) As the page quality decreases

  9. Foxing Removal :Results on other Images

  10. 1)Tonal Adjustment: Application of Non linear func. with sigmoidal shape on a RF Filtered image (Yr) Result : (Yr1) 2)Detail Preservation & Finish Tonal Adjustment: Pixel by pixel of original and RF filtered image. Result: Yn=Y*Y/Yr Process Diagram:Foxing Removal Original(after foxing removal 4)Color Correction This is done by using median of non foxed Pixels. 3)Threshol- ding using Otsu’s threshold . Result : (Ybw) Final DeFoxed

  11. Page Enhancement : Results

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