Skew Detection Using the Radon Transform*

In an automatic document conversion system, which builds digital documents from scanned articles, there is the need to perform various adjustments before the scanned image is fed to the OCR system. This is because the OCR system is prone to error when the text is not properly identified, aligned, de-noised, etc. Such an adjustment is the detection of page skew, an unintentional rotation of the page, which probably occurred during scanning. In this work we have used the Radon transform to detect the angle at which a page was skewed. Key-Words: Skew, Radon, Digitization, OCR