针对一种抗JPEG编码的密写方法,可由图象分块特性定义一个块效应参数作为统计检验量,并设定阚值从而判断秘密信息是否存在。
A block-based parameter can be defined and a threshold value chosen to detect the blockiness introduced by an anti-JPEG steganographic embedding.
针对一种抗JPEG编码的密写方法,可由图象分块特性定义一个块效应参数作为统计检验量,并设定阚值从而判断秘密信息是否存在。
A block-based parameter can be defined and a threshold value chosen to detect the blockiness introduced by an anti-JPEG steganographic embedding.
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