RT Journal T1 Video perceptual encryption algorithm in remote education receiver A1 WANG Lanzhong, MENG Wenjie PB Journal of Shandong University(Engineering Science) FD 2015-08-20 YR 2015 JF Journal of Shandong University(Engineering Science) JO Journal of Shandong University(Engineering Science) VO 45 IS 4 SP 40 DO 10.6040/j.issn.1672-3961.0.2014.353 K1 remote education;copyright management;perceptual encryption algorithm;android operating system LK {http://gxbwk.njournal.sdu.edu.cn/EN/article/article_503.shtml}