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Restoring 2D Content from Distorted Documents Michael S. Brown,Mingxuan Sun, Ruigang Yang,Lin Yun, W.Brent Seales
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Introduction
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System Overview
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Geometric Correction
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Specifying Fixed Vertices
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RGB to YUV Illumination edge Reflectance edge
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Shading Correction Illumination Edge Detection illumination edges = discontinuous 3D geometry . Gradient is denoted by . Illumination edges are denoted by {E} . Example of a set extracted of Illumination edges
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Shading Correction Image Restoration
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Bleed Correction
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Result
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