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一种基底细胞概略检测方法
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作者 汪传忠 王会 武海燕 《测试技术学报》 2014年第1期34-38,共5页
根据宫颈细胞病理学及2001TBS诊断系统,在液基宫颈癌细胞自动筛查过程中,基底细胞过多是一种病理异常现象,需要提示人工阅片.针对这点,提出一种快速识别异常标本的概略检测方法.该方法根据计算机多尺度视觉不变性,采用视觉尺度缩小方式... 根据宫颈细胞病理学及2001TBS诊断系统,在液基宫颈癌细胞自动筛查过程中,基底细胞过多是一种病理异常现象,需要提示人工阅片.针对这点,提出一种快速识别异常标本的概略检测方法.该方法根据计算机多尺度视觉不变性,采用视觉尺度缩小方式,提高了计算速率,同时利用从北京协和检验洛奇临床检验所采集来的大量标本进行实验验证.结果表明:该方法速度快、计算量小、可靠性高,在工程应用中是可行的. 展开更多
关键词 液基宫颈癌细胞自动筛查 基底细胞 概略检测 多尺度视觉不变性
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Game Theory Based False Negative Probability of Embedded Watermark Under Unintentional and Steganalysis Attacks 被引量:1
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作者 HU Ziquan SHE Kun +1 位作者 WANG Jianghua TANG Jianguo 《China Communications》 SCIE CSCD 2014年第5期114-123,共10页
Steganalysis attack is to statistically estimate the embedded watermark in the watermarked multimedia,and the estimated watermark may be destroyed by the attacker.The existing methods of false negative probability,how... Steganalysis attack is to statistically estimate the embedded watermark in the watermarked multimedia,and the estimated watermark may be destroyed by the attacker.The existing methods of false negative probability,however,do not consider the influence of steganalysis attack.This paper proposed the game theory based false negative probability to estimate the impacts of steganalysis attack,as well as unintentional attack.Specifically,game theory was used to model the collision between the embedment and steganalysis attack,and derive the optimal building embedding/attacking strategy.Such optimal playing strategies devote to calculating the attacker destructed watermark,used for calculation of the game theory based false negative probability.The experimental results show that watermark detection reliability measured using our proposed method,in comparison,can better reflect the real scenario in which the embedded watermark undergoes unintentional attack and the attacker using steganalysis attack.This paper provides a foundation for investigating countermeasures of digital watermarking community against steganalysis attack. 展开更多
关键词 digital watermarking false negative probability game theory watermark capacity steganalysis attack.
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