旋葉序列 的英文怎麼說
中文拼音 [xuányèxùliè]
旋葉序列
英文
spiral phyllotaxy-
Circular symmetric spread spectrum digital image watermarking using chaotic sequences as the watermark takes advantage of the discrete fourier transform properties and spread - spectrum communication techniques to embed a circular symmetric watermark in the frequency domain. the watermark can be detected without the presence of the original image even when the watermarked image suffers geometrical attacks such as translation, rotation and scaling. experimental results show that the proposed scheme has good transparency and highly good robustness to geometric transformations
基於混沌序列的圓對稱擴頻水印方案是以實值混沌序列作為水印，根據離散傅立葉變換的特性並結合通信上的擴頻技術，將一圓對稱水印嵌入到了圖像的頻域中，且即使圖像遭受了平移、旋轉、縮放等幾何攻擊檢測水印也不需要原圖像。
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