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» Robust Extraction of Text from Camera Images
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ICIAR
2004
Springer
15 years 9 months ago
Camera Calibration Using Two Concentric Circles
We present a simple calibration method for computing the extrinsic parameters (pose) and intrinsic parameters (focal length and principal point) of a camera by imaging a pattern of...
Francisco Abad, Emilio Camahort, Roberto Viv&oacut...
PAA
2007
15 years 3 months ago
Joint estimation of motion and radiometry of rotating camera for HDR global mosaic
In this paper, we present a global approach for constructing high dynamic range mosaics from multiple images with large exposure differences. To minimize registration errors caused...
Dae Woong Kim, Ki-Sang Hong
ICDAR
2011
IEEE
14 years 4 months ago
Text Detection and Character Recognition in Scene Images with Unsupervised Feature Learning
—Reading text from photographs is a challenging problem that has received a signicant amount of attention. Two key components of most systems are (i) text detection from images a...
Adam Coates, Blake Carpenter, Carl Case, Sanjeev S...
CVPR
2009
IEEE
15 years 8 months ago
High-quality curvelet-based motion deblurring from an image pair
One promising approach to remove motion deblurring is to recover one clear image using an image pair. Existing dual-image methods require an accurate image alignment between the i...
Jian-Feng Cai, Hui Ji, Chaoqiang Liu, Zuowei Shen
ACL
1996
15 years 5 months ago
Noun-Phrase Analysis in Unrestricted Text for Information Retrieval
Information retrieval is an important application area of natural-language processing where one encounters the genuine challenge of processing large quantities of unrestricted nat...
David A. Evans, ChengXiang Zhai