Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Wang Shuo-zhong"'
Autor:
Zhang Xin-peng, Wang Shuo-zhong
Publikováno v:
Journal of Shanghai University (English Edition). 11:323-331
The easy generation, storage, transmission and reproduction of digital images have caused serious abuse and security problems. Assurance of the rightful ownership, integrity, and authenticity is a major concern to the academia as well as the industry
Autor:
Yan Peimin, Wang Shuo-zhong
Publikováno v:
Journal of Shanghai University (English Edition). 10:228-232
In electrical impedance tomography (EFT), distribution of the internal resistivity or conductivity of an unknown object is estimated using measured boundary voltage data induced by different current patterns with various reconstruction algorithms. Th
Autor:
Wang Shuo-zhong, Peter Adjei Fordjour
Publikováno v:
Journal of Shanghai University (English Edition). 7:384-388
A new technique for embedding visible watermarks into a digital image is described in this paper, which uses statistical properties of each pixel and its immediate surrounding pixels in the host image, and also the statistical properties of the host
Autor:
Zhang Xin-peng, Wang Shuo-zhong
Publikováno v:
Journal of Shanghai University (English Edition). 7:261-264
Block-wise fragile watermarks can be used to reveal maliciously tampered areas in multimedia products. However a forged content containing a cloned fragile watermark can be constructed by using a series of watermarked data. To defeat this type of cou
Publikováno v:
Journal of Shanghai University (English Edition). 6:273-277
A new steganographic approach for 24-bit color images that can resist the RQP(raw-quick-pairs) steganalysis is described. The technique is based on modification of color triplets such that the existing color palette is not excessively expanded or eve
Autor:
Ljubisa Radunovic, Wang Shuo-zhong
Publikováno v:
Journal of Shanghai University (English Edition). 6:149-153
Different digital watermarking techniques and their applications are briefly reviewed. Solution to a practical problem with visible image marking is presented, together with experimental results and discussion. Main focus is on reduction of error cau
Autor:
Li Wei-Hua, Wang Shuo-zhong
Publikováno v:
Journal of Shanghai University (English Edition). 6:136-140
Daily return series of Dow Jones Industrial Average Index (DJIA) and Shanghai Conposite Index are investigated using spectral analysis methods. The day-of-the-week effect is found in the frequency domain in both stock markets. Time-domain performance
Autor:
Wang Shuo-zhong
Publikováno v:
Journal of Shanghai University (English Edition). 4:22-26
A new watermarking scheme using principal component analysis (PCA) is described. The proposed method inserts highly robust watermarks into still images without degrading their visual quality. Experimental results are presented, showing that the PCA-b
Publikováno v:
ICICIC (1)
A steganographic method is proposed to embed secret information into text files. This is achieved by making slight modification to scattered inter-word spaces of the formatted text using the popular typesetting tool TeX. The coded TeX file is compile
Autor:
Hu Licai, Wang Shuo-zhong
Publikováno v:
2006 International Conference on Wireless Communications, Networking and Mobile Computing.
A steganographic method is proposed to embed secret data in GSM full rate transcoding bit stream. Depending on the unequal importance with respect to speech subjective quality of encoded parameters and their individual bits, appropriate bits, which h