Restoring 2D Content from Distorted Documents
Michael S. Brown,Mingxuan Sun,
Ruigang Yang,Lin Yun, W.Brent Seales
Introduction
System Overview
Geometric Correction
Geometric Correction
Specifying Fixed Vertices
Specifying Fixed Vertices
RGB to YUV
Illumination edge
Reflectance edge
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
Shading Correction
Image Restoration
Bleed Correction
Result
Result
Result