Automated entry system for printed documents
Pattern Recognition
Skew correction of document images using interline cross-correlation
CVGIP: Graphical Models and Image Processing
An improved document skew angle estimation technique
Pattern Recognition Letters
Document Analysis Systems II
A simple and efficient skew detection algorithm via text row accumulation
ICDAR '95 Proceedings of the Third International Conference on Document Analysis and Recognition (Volume 2) - Volume 2
Generalized Projections: A Tool for Cursive Handwriting Normalization
ICDAR '99 Proceedings of the Fifth International Conference on Document Analysis and Recognition
A Data Reduction method for Efficient Document Skew Estimation Based on Hough Transformation
ICPR '96 Proceedings of the International Conference on Pattern Recognition (ICPR '96) Volume III-Volume 7276 - Volume 7276
Improved Nearest Neighbor Based Approach to Accurate Document Skew Estimation
ICDAR '03 Proceedings of the Seventh International Conference on Document Analysis and Recognition - Volume 1
A fast orientation and skew detection algorithm for monochromatic document images
Proceedings of the 2005 ACM symposium on Document engineering
A novel boundary growing approach for accurate skew estimation of binary document images
Pattern Recognition Letters
Skew detection using wavelet decomposition and projection profile analysis
Pattern Recognition Letters
Fast and Accurate Detection of Document Skew and Orientation
ICDAR '07 Proceedings of the Ninth International Conference on Document Analysis and Recognition - Volume 02
Hough transform based fast skew detection and accurate skew correction methods
Pattern Recognition
Estimating the Skew Angle of Scanned Document through Background Area Information
SIBGRAPI '08 Proceedings of the 2008 XXI Brazilian Symposium on Computer Graphics and Image Processing
Robust detection of skew in document images
IEEE Transactions on Image Processing
Automatic image orientation detection
IEEE Transactions on Image Processing
CAIP'11 Proceedings of the 14th international conference on Computer analysis of images and patterns - Volume Part II
Segmentation of connected handwritten digits using Self-Organizing Maps
Expert Systems with Applications: An International Journal
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Skew correction of scanned documents is a crucial step for document recognition systems. Due to the problem of high computational costs of the state-of-the-art methods, we present herein a variation of a parallelograms covering algorithm. This variation strongly reduces the computational time and works over noisy documents and documents containing non-textual elements, like: stamps, handwritten components and vertical bars. Experimental studies with different databases show that this variation overcomes well-known techniques, achieving better results over synthetic rotated documents and real scanned documents.