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首先阐述了利用计算机进行底灰量化检测的原理,实现了复印文件底灰的量化检测软件,而后通过实验验证了利用底灰量化信息判定叠加法变造复印文件是可行的,最后阐述了这一方法在案件鉴定中的具体应用。
First of all, the principle of computerized grayscale detection is expounded. The quantitative detection software of the bottom of the copy file is realized. Then it is verified through experiment that it is feasible to judge the superposition file by using the additive information. Finally, The application of the method in case appraisal.