Source Smartphone Identification for Digital Zoomed Images

摘要：

　　Sensor noise caused by photo response non-uniformity(PRNU)has been widely accepted as a reliable fingerprint for source camera identification(SCI).In the sensor based camera identification methods,the extracted noise from a test image needs to be absolutely synchronized with the camera fingerprint.However,for the images captured under digital zoom,this requirement is not satisfiied,which is very common for smartphone shooting environment due to no optical zoom available.Here,through carefully studying about the effect of the digital zoom on the sensor-based SCI,we found several characteristics in this case,and proposed a novel metric to enhance the SCI performance for images taken with digital zoom.Experimental results show that the proposed metric outperforms the benchmark metric for source smartphone identification on digital zoomed images by evaluating the ROC performance.

关键词： Sensor noise photo response non-uniformity source smartphone identifiication digital zoom ROC performance

作者: Hui Zeng Anjie Peng Xiaodan Lin Shenghai Luo

作者单位: School of Computer Science&Technology Southwest University of Science and Technology Mianyang,China School of Information Science&Engineering Huaqiao University School of Computer Science&Technology Southwest University of Science and Technology

会议类型: 国际会议

会议名称: 2019国图灵大会(ACM Turing Celebration conference-China 2019 )

会议地点: 成都

会议语种:英文

页码: 999-1004

在线出版日期: 2019-05-17（万方平台首次上网日期，不代表论文的发表时间）