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	Browse All Reviews > Computing Methodologies (I) > Computer Graphics (I.3) > Graphics Utilities (I.3.4) > Picture Description Languages (I.3.4...)     Options: All Media Types Journals Proceedings Div Books Whole Books Other Date Reviewed Title Author Publisher Published Date Descending Ascending     1-2 of 2 Reviews about "Picture Description Languages (I.3.4...)": Date Reviewed   Cryptosystems for picture languages Siromoney R., Subramanian K., Jeyanthi A., Springer-Verlag New York, Inc., New York, NY, 1988.  Type: Book (9780387192093) The construction of a public key cryptosystem is based on the idea of a trapdoor. Without the secret information in the trapdoor, the cryptanalyst who only has the public information finds it difficult to decode a ciphertext. The trapd... Aug 1 1989   Complexity and decidability for chain code picture languages Sudborough I., Welzl E. Theoretical Computer Science 36(2-3): 173-202, 1985.  Type: Article In a recent paper Maurer, Rozenberg, and Welzl [1] introduced a system of representing pictures drawn on the Cartesian unit grid as walks defined by words over the alphabet &pgr;={u,d,r,l}, where u Jan 1 1986
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