A novel data hiding technique using residue number system

2008 3rd IEEE Conference on Industrial Electronics and Applications

Bhattacharyya²,

Das³

2008

In this paper, we propose a technique for embedding watermark bi-color image into color image. At the source, the handwritten signature image (bi-color image) is encoded at the end of the color image. Double folded security of handwritten signature can be achieved (over the untrusted network) by; firstly, the starting point of encoding the image data is depended on the size of the images; secondly, the starting point (byte location) of bi-color image encoding in the color image is stored within a four-byte block in encoded form. This four-byte location encoding is done by public key.At the target, firstly, the starting point of encoding bi-color image data (location) is decoded by private key and then, secondly, starts extracting the encoded bi-color image data from the color image. This technique requires knowledge of the color image for the recovery of the handwritten signature image. At the receiver, the algorithm reconstructs the original handwritten signature image. We examine the proposed technique for embedding a bi-color handwritten signature image of 70×50 pixels size in the color host image of 512×512 pixels. Simulation results show very low visible distortions in the host image and algorithms provides high degree of robustness.

Section: Previous Workmentioning

confidence: 99%

Hybrid digital-embedding using invisible watermarking

2008 3rd IEEE Conference on Industrial Electronics and Applications

Bhattacharyya²,

Das³

2008

“…Ammar, A. S. S. El-Kabbany M. I. Youssef and A. Emam [13] have developed a new data hiding technique based on residue number system is introduced in digital imagery system. This technique is used to encode two digital image signals or one text with one image signal.…”

Section: Igure-1mentioning

confidence: 99%

Handwritten signature hiding and extraction using alternate bit stuffing

Bhattacharyya¹,

Phani²,

2007 International Conference on Intelligent and Advanced Systems

2007

In this paper we propose a data hiding and extraction algorithm for binary images. Handwritten signature can be easily transmitted through the network using this data hiding method. Here we are implementing bit masking to retrieve alternate bits of the watermark image and stuff that bit to the alternate bit positions in the image file at the source end. The eight bits of a single pixel of the watermark image are embedded into the alternate positions of two adjacent pixels of the image that is to be sent. At the target end the bits at the alternate positions of the two adjacent pixels make up the single pixel of the extracted watermark image. This method can be used as ownership protection, copy control and authentication of digital media. This work focuses on the protection of digital signature.

“…This technique will lead to unreadable two image signals, which are hidden and embedded in multiplexed image signal. Also the demultiplexing technique to separate the original image signals is simply performed successfully [12].…”

Section: Introductionmentioning

confidence: 99%

Bi-color nonlinear data embedding and extraction of handwritten signature

2008 3rd IEEE Conference on Industrial Electronics and Applications

Bhattacharyya²,

Debnath³

et al. 2008

In this paper, we propose data hiding and extraction algorithms for binary images. Handwritten Signature Image can be transmitted from source to target securely over network after processing the source image by using this proposed Data Hiding Algorithm. According to the algorithm, size of the carrier image must be double (or more) the size of source image. If necessary then additional bytes or noise has to be injected into carrier image to attain the required size. To do this, the header is updated by the new value (sum of original size of file and amount of noise).This proposed technique can be applied for ownership protection, copy control, annotation and authentication of digital media. This work is specifically focused on protection and authentication of Handwritten Signature.