Image coding for copyright protection by using wavelet (Japanese)

In: Transactions of the Information Processing Society of Japan   ;  38 ,  3  ;  534-539  ;  1997
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In this paper, we propose how to embed a gray-scaled seal image into a picture under wavelet transform. We use the relationship between both the multi-resolution representations of the original and the embedded pictures for our method. A pixel of the seal image is expressed in three bits and is added to each element of multi-resolution representations, respectively. When these are transformed inversely, the information of the seal are dispersed on the reproduced picture and cannot be recognized at sight. If the author wants to get it, he can extract the seal from the embedded picture by substructing the original picture, exactly. At the same time, some vestiges of seal are detected when somebody tried to change or delete it. We can use our method as a copyright protection tool for multimedia.

Table of contents – Volume 38, Issue 3

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A proposal of gap decrease sorting network
Kuroda, H. | 1997
An efficient sorting algorithm on parallel computers with a faulty node
Imamura, H. / Yamamoto, H. / Kobayashi, H. | 1997
A cell loss approximation for heterogeneous ATM traffic based on the approach of the orthogonal projection to the linear subspace
Hatono, A. / Kawakita, K. | 1997
Induction of N-level decision trees
Sakamoto, T. / Uehara, K. | 1997
A regressive belief estimation algorithm in multi-agent environments
Isozaki, H. / Katsuno, H. | 1997
Making theorem prover SATCHMORE more efficient
He, L. / Shimajiri, Y. / Chao, Y. / Seki, H. / Itoh, H. | 1997
Non-Horn magic sets to enhance the search efficiency of bottom-up theorem proving
Hasegawa, R. / Inoue, K. / Ohta, Y. / Koshimura, M. | 1997
Automata theory for action language A
Nabeshima, H. / Inoue, K. | 1997
The resolution of coreferential relation in Japanese complex sentences based on semantics of verbs and adjectives
Nishizawa, S. / Kimura, K. / Nakagawa, H. | 1997
A context-sensitive measurement of semantic word distance
Kozima, H. / Ito, A. | 1997
Generating a logical-constraint-based internal representation from a unification grammar formalism with disjunctive information
Nakano, M. / Shimazu, A. | 1997
HMM parameter learning for Japanese morphological analyzer
Takeuchi, K. / Matsumoto, Y. | 1997
Speech stream segregation and preliminary results on listening to several speeches simultaneously
Okuno, H.G. / Nakatani, T. / Kawabata, T. | 1997
Baseball trajectory pursuit using color distance recognition and arriving position forecast using trajectory functions adaptively applied
Murai, Y. / Bansho, K. / Yamamoto, K. / Noda, K.I. | 1997
Image coding for copyright protection by using wavelet
Onishi, J. / Matsui, K. | 1997
Computation methods for degenerate normal vectors of tensor product surfaces
Yamaguchi, Y. | 1997
Collision detection and compaction of spaces among polygons: applications of "space model"
Ohsawa, A. / Miyachi, M. | 1997
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Kuno, Y. / Ohki, A. | 1997
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Cooperation of code scheduler and register allocator for instruction-level parallel architectures
Koseki, A. / Komatsu, H. / Momose, H. / Fukuzawa, Y. | 1997
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Ontology-based information gathering, categorization and reorganization from wide-area networks
Iwazume, M. / Shirakami, K. / Hatadani, K. / Takeda, H. / Nishida, T. | 1997
Information reorganization using associative structures
Maeda, H. / Koujitani, K. / Nishida, T. | 1997
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Takizawa, Y. / Ueda, Y. | 1997
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Terai, M. / Shirota, H. / Shibatani, S. / Sato, K. | 1997