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題 名 | 基於離散餘弦轉換之強健型盲式浮水印新技術=Novel Robust and Blind Watermarking Based on DCT |
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作 者 | 張薰文; 劉子敬; | 書刊名 | 大同學報 |
卷 期 | 38 2024.01[民113.01] |
頁 次 | 頁21-28+77 |
分類號 | 477 |
關鍵詞 | 離散餘弦轉換; 強健型; 盲式浮水印; Discrete cosine transform; Robust; Blind watermarking; |
語 文 | 中文(Chinese) |
中文摘要 | 本論文提出基於離散餘弦轉換(DCT)之浮水印新技術,於𝑌𝐶𝑏𝐶𝑟色彩空間,經由88大小之DCT區塊轉換,選定8個DCT係數並設定相對應縮放因子,於每 個彩色區塊嵌入24個浮水印位元,將彩色數位浮水印嵌入欲保護智慧財產權之 圖像中,在考量嵌入品質與隱匿性的情況下,大幅提升抵抗JPEG壓縮攻擊的能 力與浮水印的提取品質。實驗結果亦佐證本論文所提出之強健型盲式浮水印技 術,在平均每個彩色像素嵌入38浮水印位元之高嵌入量下,達到良好的浮水印提取品質,並可承受包含JPEG壓縮等之各種攻擊。 |
英文摘要 | This paper presents a novel watermarking scheme based on discrete cosine transform (DCT). In 𝑌𝐶𝑏𝐶𝑟 color space, the host image is partitioned into 8x8 nonoverlapping blocks, and each block is transformed into frequency domain based on DCT. In each color block, we embed 24 watermarking bits into 8 selected DCT coefficients with corresponding scalar factors. Therefore the color watermark is embedded into the host image for protecting intellectual property rights. Under consideration of embedding quality and imperceptibility, we obtain great ability to against JPEG attack and good extracting quality. Experimental results also show that our proposed techniques achieve good embedding quality and great resistance to attacks at high embedding capacity of 3/8 bit per color pixel |
本系統中英文摘要資訊取自各篇刊載內容。