A fast approach to the detection and correction of skew documents

Huei Fen Jiang, Chin Chuan Han, Kuo Chin Fan

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


In this paper, a fast approach is proposed to detect and correct skew documents. A coarse skew angle θe is first estimated and then the exact skew angle θ is determined by making use of the Hough transform. Besides, a skew bitmapped binary image can be quickly corrected by decomposing the traditional geometric rotation process into a translation and a local rotation process. Experimentation on a wide variety of documents verifies the validity and efficiency of the proposed approach in detecting and correcting skew bitmapped binary images.

Original languageEnglish
Pages (from-to)675-686
Number of pages12
JournalPattern Recognition Letters
Issue number7
StatePublished - Jul 1997


  • Bitmapped images
  • Hough transform
  • Skew correction
  • Skew detection


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