Digital halftoning
Digital halftones by dot diffusion
ACM Transactions on Graphics (TOG)
A simple and efficient error-diffusion algorithm
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
A Novel Information Hiding Scheme Based on BTC
CIT '04 Proceedings of the The Fourth International Conference on Computer and Information Technology
Improved block truncation coding based on the void-and-cluster dithering approach
IEEE Transactions on Image Processing
Secure spread spectrum watermarking for multimedia
IEEE Transactions on Image Processing
Optimized halftoning using dot diffusion and methods for inverse halftoning
IEEE Transactions on Image Processing
Tone-dependent error diffusion
IEEE Transactions on Image Processing
Model-based color halftoning using direct binary search
IEEE Transactions on Image Processing
Proceedings of the Second International Conference on Computational Science, Engineering and Information Technology
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In this paper, a watermarking scheme, called majority-parity-guided error-diffused block truncation coding (MPG-EDBTC), is proposed to achieve high image quality and embedding capacity. EDBTC exploits the error diffusion to effectively reduce blocking effect and false contour which inherently exhibit in traditional BTC. In addition, the coding efficiency is significantly improved by replacing high and low means evaluation with extreme values substitution. The proposed MPG-EDBTC embeds a watermark simultaneously during compression by evaluating the parity value in a predefined parity-check region (PCR). As documented in the experimental results, the proposed scheme can provide good robustness, image quality, and processing efficiency. Finally, the proposed MPG-EDBTC is extended to embed multiple watermarks and achieves excellent image quality, robustness, and capacity. Nowadays, most multimedia is compressed before it is stored. It is more appropriate to embed information such as watermarks during compression. The proposed method has been proved to solve effectively the inherent problems in traditional BTC, and provide excellent performance in watermark embedding.