This paper presents a data hiding application for document images providing security. Document images should be in bitmap format as well as grayscale in nature otherwise the developed system will automatically change it to grayscale. The system accepts any grayscale document image as an input and applies the developed technique on it. Developed technique is based on Entropy Based that selects the suitable areas in an image for that data insertion purpose. Output produced by the system is the processed document that is data embedded. Processed document should not look different from the original image means its visual quality should be high. The system is successfully tested for the test cases generated to check the effectiveness, quality and validation of the system. The system is developed using Matlab 7.7.0 (R2008b) for the development of front end as well as the back end.

L. Haipang , Alex C. Kot, and Yun Q. Shi , “Distance-Reciprocal Distortion Measure for Binary Document Images,†in IEEE Signal Processing Letters, Vol. 11,No. 2,February 2004.

Y. Huijuan , Alex C. Kot, “Text Document Authentication By Integrating Inter Character And Word Spaces Watermarking†“, The 2004 IEEE International Conference on Multimedia and Expo. (ICME’2004), June 26-30, 2004.

Y. Huijuan , Alex C. Kot, “Data hiding for Bi-level Documents Using Smoothing Techniquesâ€, The 2004 IEEE International Symposium on Circuits and Systems(ISCAS’2004), Vol. V, pp. 692-695, May 23-26, 2004.

Young-Won Kim, Kyung-Ae Moon, and Il-Seok Oh, “A Text watermarking Algorithm based on Word Classification and Inter-word Space Statisticsâ€, IEEE, Seventh International Conference on Document Analysis and Recognition Volume II, August 03-06,2003, Edinburgh, Scotland.

H. Ding , Hong Yan “Interword Distance Changes Represented by Sine Waves for Watermarking Text Imagesâ€, CirSysVideo, Vol 11, No. 12, December 2001.

K. Jonathan Su, Frank Hartung, and Bernd Girod ,“Digital Watermarking of Text, Images and Video Documentsâ€, Computer Graphics International 98, Hannover, Germany, June 1998.

C. Nopporn, “Document Image Data Hiding Using Character Spacing Width Sequence Codingâ€, in ICIP’99, pg II:250-254.

S. Pavan, Sridhar Gangadharpalli, Sridhar V., “Multivariate Entropy Detector Based Hybrid Image Registration Algorithmâ€, IEEE International Conference on Acoustics, Speech, and Signal Processing,March 18-23, 2005 (ICASSP).

Swetha Kurup, Sridhar G., and Sridhar V. “Entropy Based Data Hiding for Document Imagesâ€, Proceedings of world academy of science, engineering and technology volume 5 April 2005 ISSN 1307-6884

Hae Yong Kim , “A new public-key authentication watermarking for binary document images resistant to parity attacksâ€, 0-7803-9134-9/05/$20.00 ©2005 IEEE

H. Lu, J. Wang, A. C. Kot, and Y. Q. Shi, “An objective distortion measure for binary document images based on human visual perception,†in Proc. Int. Conf. Pattern Recognition, vol. 4, Quebec, Canada, Aug. 2002, pp. 239–242.

Haiping Lu, Alex C. Kot and Jun Cheng, “Secure Data Hiding In Binary Document Images for Authentication,†School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.

Rakhshanda Yousaf, dissertation of department of software engineering “Data Hiding in Binary Document Images Based on DRDM for Authenticationâ€, BSE (FJWU) 2008.

Asima Iqbal, Dissertation of department of software engineering “Data Hiding Technique for Binary Document Images Based on Entropy Measure with AWTC for Authenticationâ€, BSE (FJWU) 2009.