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According to the features of DCT-based and DFT-based video watermark algorithms against attacks and considering 3D video structural characteristic, a new robust blind video watermark algorithm in transform domain combining with 3D video correlation is proposed. DCT-based watermark and DFT-based watermark are embedded in left and right images of a video frame using opposite embedding rules, and the watermark can be extracted by integrating 3D video correlation, and more robust watermark is extracted from the DCT-based watermark and the DFT-based watermark by comparing their performance. The algorithm can significantly improve the robustness of 3D video watermark against resolution attack and coding attack. The experimental results show that the proposed algorithm has excellent performance against resolution attack and coding attack, and is obviously better than DCT-based and DFT-based algorithms. [ABSTRACT FROM AUTHOR]

In the title compound, C(11)H(17)ClNO(+)·C(7)H(5)O(2) (-), obtained by the reaction of chlorprenaline {or 1-(2-chlorophenyl)-2-[(1-methylethyl)amino]ethanol} and benzoic acid, the chlorprenaline is twisted moderately [C-C-C-C torsion angle = -76.00 (17)°] compared with related compounds. The mol-ecules as usual form dimers. In the crystal structure, the two components are connected by classical O-H⋯O and N-H⋯O hydrogen bonds.

The title compound, C(11)H(17)ClNO(+)·C(8)H(7)O(2) (-), was obtained by the reaction of chlorprenaline {or 1-(2-chloro-phen-yl)-2-[(1-methyl-eth-yl)amino]-ethanol} and p-toluic acid. The chlorpren-aline is twisted moderately with a C-C-C-C torsion angle of 109.6 (2)°. The two mol-ecules are linked by classical O-H⋯O and N-H⋯O hydrogen bonds. Further N-H⋯O hydrogen bonds link two of these units into dimers.