Error resilience using a reversible data embedding technique in H.264/AVC
MUSP'07 Proceedings of the 7th WSEAS International Conference on Multimedia Systems & Signal Processing
Spatial error concealment: A novel exemplar-based approach using segmentation
Computers and Electrical Engineering
Projection onto convex sets with watermarking for error concealment
PReMI'07 Proceedings of the 2nd international conference on Pattern recognition and machine intelligence
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Error concealment of H.264 encoded video through a hybrid scheme
Proceedings of the International Conference on Management of Emergent Digital EcoSystems
Novel wavelet-based QIM data hiding technique for tamper detection and correction of digital images
Journal of Visual Communication and Image Representation
Error concealment in video communications by informed watermarking
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
An improved reversible data hiding-based approach for intra-frame error concealment in H.264/AVC
Journal of Visual Communication and Image Representation
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A robust error concealment scheme using data hiding which aims at achieving high perceptual quality of images and video at the end-user despite channel losses is proposed. The scheme involves embedding a low-resolution version of each image or video frame into itself using spread-spectrum watermarking, extracting the embedded watermark from the received video frame, and using it as a reference for reconstruction of the parent image or frame, thus detecting and concealing the transmission errors. Dithering techniques have been used to obtain a binary watermark from the low-resolution version of the image/video frame. Multiple copies of the dithered watermark are embedded in frequencies in a specific range to make it more robust to channel errors. It is shown experimentally that, based on the frequency selection and scaling factor variation, a high-quality watermark can be extracted from a low-quality lossy received image/video frame. Furthermore, the proposed technique is compared to its two-part variant where the low-resolution version is encoded and transmitted as side information instead of embedding it. Simulation results show that the proposed concealment technique using data hiding outperforms existing approaches in improving the perceptual quality, especially in the case of higher loss probabilities.