1. M. Pietikainen, O. Okun. Edge-based Method for Text Detection from Complex Document Images. In Proceedings of the 6th International Conference on Document Analysis and Recognition, IEEE Press, Seattle, WA, USA, pp. 286–291, 2002.
2. K. Jung, K. In Kim, A. K. Jain. Text Information Extraction in Images and Video: A Survey. Pattern Recognition, vol. 37, no. 5, pp. 977–997, 2004.
3. D. F. Dunn, N. E. Mathew. Extracting Color Halftones from Printed Documents Using Texture Analysis. Pattern Recognition, vol. 33, no. 3, pp. 445–463, 2000.
4. T. Ojala, M. Pietikäinen, T. Mäenpää. Gray Scale and Rotation Invariant Texture Classification with Local Binary Patterns. In Proceedings of the 6th European Conference on Computer Vision, Lecture Notes in Computer Science, Springer-Verlag, London, UK, vol. 1842, pp. 404–420, 2000.
5. J. Gllavata, R. Ewerth, B. Freisleben. Finding Text in Images via Local Thresholding. In Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology, pp. 539–542, 2003.