Abstract
This paper proposes a gray scale image watermarking scheme based on Discrete Cosine Transform (DCT). In this scheme, the host image is divided into non-overlapping blocks. The pixel values within the blocks are permuted and DCT is applied for each block separately. The permutation makes the distribution of the DCT coefficient uniform within the block and hence embedding watermark in any region of the block produces similar result. Since, the embedding is done in blocks, multiple embedding is also possible. Experimental results also show that the performance of the scheme is good against various image processing operations and cropping attack.
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Chandranbabu, K., Ponnaian, D. (2016). An Enhanced Image Watermarking Scheme Using Blocks with Homogeneous Feature Distribution. In: Senthilkumar, M., Ramasamy, V., Sheen, S., Veeramani, C., Bonato, A., Batten, L. (eds) Computational Intelligence, Cyber Security and Computational Models. Advances in Intelligent Systems and Computing, vol 412. Springer, Singapore. https://doi.org/10.1007/978-981-10-0251-9_9
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DOI: https://doi.org/10.1007/978-981-10-0251-9_9
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