Z M. Lu and S.H. Sun( 2000). Digital Image Watermarking Technique Based on Vector Quantisation. IEE Electronics Letters. 36(4): 303 305. SCI&El) 新思想、原创(将矢量量化和数字水印相结合) J.S. Pan, Z M. Lu and S H Sun(2000): Fast Codeword Search Algorithm for Image Coding based on Mean-Variance Pyramids of Codewords. IEE Electronics Letters. 36(3 210-211. sci&En Jeng-Shyang Pan, Zhe-Ming Lu and Sheng-He sun(2003): An Efficient Encoding Algorithm for Vector Quantization Based on Subvector Technique. IEEE Transactions on Image Processing 12(3):265-270.(SCI&EI) Zhe-ming Lu, Jeng-shyang Pan and Sheng-he Sun(2000) Efficient Codeword Search algorithm Based on Hadamard Transform. IEE Electronics Letters. 36(16 1364-1365 (SCI&ED) 新方法(属重大改进型)Z. M. Lu and S. H. Sun (2000): Digital Image Watermarking Technique Based on Vector Quantisation. IEE Electronics Letters. 36(4): 303- 305.(SCI&EI). 新思想、原创（将矢量量化和数字水印相结合） J. S. Pan, Z. M. Lu and S. H. Sun (2000): Fast Codeword Search Algorithm for Image Coding Based on Mean-Variance Pyramids of Codewords. IEE Electronics Letters. 36(3): 210-211. (SCI&EI). Jeng-Shyang Pan, Zhe-Ming Lu and Sheng-He Sun (2003): An Efficient Encoding Algorithm for Vector Quantization Based on Subvector Technique. IEEE Transactions on Image Processing. 12(3):265-270. (SCI&EI). 新方法（属重大改进型） Zhe-ming Lu, Jeng-shyang Pan and Sheng-he Sun (2000): Efficient Codeword Search Algorithm Based on Hadamard Transform. IEE Electronics Letters. 36(16): 1364-1365. (SCI&EI)