CDMA: principles of spread spectrum communication
CDMA: principles of spread spectrum communication
Performance Improvement of Spread Spectrum Based Image Watermarking Schemes through M-ary Modulation
IH '99 Proceedings of the Third International Workshop on Information Hiding
Digital Image Processing Using MATLAB
Digital Image Processing Using MATLAB
Robust SS watermarking with improved capacity
Pattern Recognition Letters
Robust watermarking based on DWT and nonnegative matrix factorization
Computers and Electrical Engineering
Dual purpose FWT domain spread spectrum image watermarking in real time
Computers and Electrical Engineering
Hardware assisted watermarking for multimedia
Computers and Electrical Engineering
Spatial error concealment: A novel exemplar-based approach using segmentation
Computers and Electrical Engineering
Subcarrier PIC Scheme for High Capacity CI/MC-CDMA System with Variable Data Rates
MWS '09 Proceedings of the 2009 IEEE Mobile WiMAX Symposium
Computers and Electrical Engineering
M-Ary Phase Modulation for Digital Watermarking
International Journal of Applied Mathematics and Computer Science - Applied Image Processing
M-ary QIM Data Hiding for Error Concealment of Digital Image in JPEG Pipeline
ACT '09 Proceedings of the 2009 International Conference on Advances in Computing, Control, and Telecommunication Technologies
Projection onto convex sets with watermarking for error concealment
PReMI'07 Proceedings of the 2nd international conference on Pattern recognition and machine intelligence
Region based QIM digital watermarking scheme for image database in DCT domain
Computers and Electrical Engineering
A fragile watermark error detection scheme for wireless video communications
IEEE Transactions on Multimedia
IEEE Transactions on Information Theory
A region and data hiding based error concealment scheme for images
IEEE Transactions on Consumer Electronics
An Efficient Two-stage Error Detector Based on Syntax and Continuity
IEEE Transactions on Consumer Electronics
A temporal error concealment method for H.264/AVC using motion vector recovery
IEEE Transactions on Consumer Electronics
IEEE Transactions on Consumer Electronics
Rayleigh fading channels in mobile digital communication systems .I. Characterization
IEEE Communications Magazine
Reconstruction of baseline JPEG coded images in error prone environments
IEEE Transactions on Image Processing
Image quality assessment: from error visibility to structural similarity
IEEE Transactions on Image Processing
Joint source-channel coding for wireless object-based video communications utilizing data hiding
IEEE Transactions on Image Processing
Concealment of damaged block transform coded images using projections onto convex sets
IEEE Transactions on Image Processing
Novel sequential error-concealment techniques using orientation adaptive interpolation
IEEE Transactions on Circuits and Systems for Video Technology
Edge-Directed Error Concealment
IEEE Transactions on Circuits and Systems for Video Technology
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Transmission of block-coded images through error prone radio mobile channel often results in lost blocks. To this aim, this paper proposes a protection mechanism for discrete cosine transform based compressed image(s) through error concealment without affecting the compatibility of standard JPEG coding. The goal is achieved by embedding a low-resolution version (image-digest) of an image into itself during encoding using M-ary quantization index modulation. Halftoning technique is used to obtain the image digest from the host image. At the decoder, this embedded watermark is extracted first and is then used as a reference one to conceal the transmission losses in the received image. Mathematical analysis as well as simulation results show that the use of M-ary modulation offers significant performance improvement than traditional quantization index modulation based methods in large number of lost block (packet) scenario. Relative compensation for visual quality improvement is also tested in Rayleigh fading wireless channel and is compared with the few other existing methods.