人工搬运的STC编码源码，做信息隐藏的可以看一下，实现了论文 Tomas Filler, Jan Judas, Jessica Fridrich "Minimizing Embedding Impact in Steganography using Trellis-Coded Quantization", Proc. SPIE, Electronic Imaging, Media Forensics and Security XII, San Jose, CA, January 18-20,

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