extract_feature
代码说明：
此工程实现提取jpeg图像的DCT系数首字母概率作为jpeg重压缩检测的特征，以此特征训练出分类模板，可以检测出一张jpeg图像是单压缩还是重压缩。(Works to achieve this extract jpeg image DCT coefficients of the first letter of the probability of detection as a jpeg heavy compression feature, this feature trained classification templates that can detect a single jpeg image compression or recompression.)
文件列表：
extract_feature
...............\dump_dct2.pro,318,2016-03-03
...............\dump_dct2.pro.user,18069,2016-03-03
...............\helpers.cpp,5283,2016-03-03
...............\helpers.h,851,2016-03-03
...............\jpeg_tools.cpp,4389,2016-03-03
...............\jpeg_tools.h,805,2016-03-03
...............\main.cpp,1283,2016-03-03
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