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» Character Recognition under Severe Perspective Distortion
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DCC
2008
IEEE
14 years 7 months ago
An Estimation-Theoretic Interpretation of Video Rate Distortion Optimization with Lagrangian Formulation
Rate distortion optimization with Lagrangian formulation is widely used in video encoder control and has proved effective in achieving a good trade-off between coding efficiency a...
Zhen Li, Alexis Michael Tourapis
AMFG
2003
IEEE
122views Biometrics» more  AMFG 2003»
14 years 28 days ago
Is Face Recognition in Pictures Affected by the Center of Projection?
Recognition of unfamiliar faces can be severely impaired when two pictures of a face are taken from different camera distances. This effect of perspective transformation may be pr...
Chang Hong Liu
ACCV
2006
Springer
14 years 1 months ago
Fisheye Lenses Calibration Using Straight-Line Spherical Perspective Projection Constraint
Fisheye lenses are often used to enlarge the field of view (FOV) of a conventional camera. But the images taken with fisheye lenses have severe distortions. This paper proposes a...
Xianghua Ying, Zhanyi Hu, Hongbin Zha
ICDAR
2009
IEEE
13 years 5 months ago
Coupled Snakelet Model for Curled Textline Segmentation of Camera-Captured Document Images
Detection of curled textline is important for dewarping of hand-held camera-captured document images. Then baselines and the lines following the top of x-height of characters (x-l...
Syed Saqib Bukhari, Faisal Shafait, Thomas M. Breu...
ICIP
2007
IEEE
14 years 9 months ago
Epipolar Curve Tracking in 3-D
Vehicle tracking in video sequences is typically carried out by matching 2-d views (images or features) of the vehicle from one frame to the next. These views are adapted by gradu...
Matthew J. Leotta, Joseph L. Mundy