Unverified50% confidenceFactExact time
JPEG压缩通过DCT和量化矩阵丢弃高频细节，系统性压制深度伪造检测器依赖的高频域生成器指纹，当质量因子从95降至75时高频分量信息损失可达60-80%
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50%
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Long-term
Relevance
8/26/2026
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