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» A locally adaptive zooming algorithm for digital images
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ICDAR
2009
IEEE
14 years 1 months ago
Constant-Time Locally Optimal Adaptive Binarization
Scanned document images are nowadays becoming available in increasingly higher resolutions. Meanwhile, the variations in image quality within typical document collections increase...
Iuliu Konya Konya, Christoph Seibert, Stefan Eicke...
CRV
2005
IEEE
179views Robotics» more  CRV 2005»
13 years 8 months ago
Detection of Linear and Cubic Interpolation in JPEG Compressed Images
A novel algorithm is introduced that can detect the presence of interpolation in images prior to compression as well as estimate the interpolation factor. The interpolation detect...
Andrew C. Gallagher
3DIM
2001
IEEE
13 years 10 months ago
Combining Off- and On-Line Calibration of a Digital Camera
We introduce a novel outlook on the self-calibration task, by considering images taken by a camera in motion, allowing for zooming and focusing. Apart from the complex relationshi...
Magdalena Urbanek, Radu Horaud, Peter F. Sturm
ICIP
2009
IEEE
13 years 4 months ago
Structured pursuits for geometric super-resolution
Super-resolution image zooming is possible when the image has some geometric regularity. We introduce a general class of non-linear inverse estimators, which combines linear estima...
Stéphane Mallat, Guoshen Yu
ICASSP
2011
IEEE
12 years 10 months ago
Enhancement of uneven lighting text image using line-based Empirical Mode Decomposition
Non-uniform light distribution problems often arise in the text images taken by digital camera. In this paper, we propose a novel technique for text image uneven lighting removal ...
Soo-Chang Pei, Mary Tzeng, Yu-Zhe Hsiao