CAJ | 학술논문

基于相机指纹/成像传感器模式噪声的图像源辨识算法容易受到指纹复制攻击。文中首先对现有的三角测试反攻击算法进行了简化，即通过将图像各块的衰减因子近似认为是常数，减少了计算时间，然后从传感器模式噪声添加方式、图像内容、模式噪声提取方式和盗用图片数目四个方面对反攻击算法性能进行了详细分析。最后，根据实验结果指出，以上四个方面都会影响反攻击算法的成功率。文中还讨论了这些因素所影响的程度和范围。
기우상궤지문/성상전감기모식조성적도상원변식산법용역수도지문복제공격。문중수선대현유적삼각측시반공격산법진행료간화，즉통과장도상각괴적쇠감인자근사인위시상수，감소료계산시간，연후종전감기모식조성첨가방식、도상내용、모식조성제취방식화도용도편수목사개방면대반공격산법성능진행료상세분석。최후，근거실험결과지출，이상사개방면도회영향반공격산법적성공솔。문중환토론료저사인소소영향적정도화범위。
Considering the image source identification algorithm based on the camera fingerprint and the imaging sen -sor pattern noise to be easily attacked by fingerprint-copy operation , this paper simplifies the triangle test algorithm which is a counter-attack algorithm against the fingerprint-copy operation , that is, the attenuation factor for each block is set as a constant , thus reducing calculation time .Then, the performance of the counter-attack algorithm is discussed in detail from four aspects , namely, the addition manner of sensor pattern noise , the image content , the way of extracting sensor pattern noise and the number of illegally -used images.Finally, according to the experimental results, this paper points out that all the four aspects can affect the success rate of the counter -attack algorithm .In addition, the degree and scope of effect caused by the above-mentioned factors are also explored .