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外文翻譯---一種針對(duì)h264編碼視頻具有可控檢測(cè)性能的魯棒性水印機(jī)制譯文-資料下載頁

2025-05-12 11:04本頁面

【導(dǎo)讀】情況下,有效載荷和魯棒性得到提高。壓縮;在解碼視頻序列中檢測(cè)水印,可用于確定幀內(nèi)編碼模型改變時(shí)算法的魯棒性。仿真結(jié)果表明,蒙特卡羅實(shí)驗(yàn)達(dá)到了預(yù)期的檢測(cè)性能。本文證實(shí)了該算法對(duì)若干不同攻擊均具有魯棒性。一不顯示出數(shù)字視頻的重要性。雖然MPRG-2在視頻編碼上已取得顯著成就,但。以其更高的壓縮效率正在逐漸取代MPRG-2。及,對(duì)該標(biāo)準(zhǔn)版權(quán)保護(hù)方法和鑒定方法的需求也將出現(xiàn)。后重新編碼的做法是不切實(shí)際的。部分近期出版的文獻(xiàn)探討了在碼流序列中嵌入水印的方法。參考文獻(xiàn)[4]給出一種復(fù)雜度較低的機(jī)制,即在每個(gè)。我們證實(shí),所產(chǎn)生水印碼的總和及選中的DCT系數(shù)是兩個(gè)水印檢。測(cè)的充分統(tǒng)計(jì)量,而選中的DCT系數(shù)是由原始視頻的量化步長(zhǎng)來測(cè)量的。人類視覺靈敏度隨DCT基函數(shù)中頻率的變化而變化。的量化誤差視覺閾值,以使其適用于4×4DCT域。成立時(shí),4×4DCT域基函數(shù)中的i4j4與8×8DCT域基函數(shù)中的i8j8有相同的頻。數(shù)ci和cj使得4×4DCT的誤差幅度是8×8DCT的兩倍,因此,為獲得不可見性,

  

【正文】 、 總結(jié) 本文提出了一種對(duì)常見信號(hào)處理攻擊具有魯棒性的 水印算法。采用適合于 4 4DCT 域的人類視覺模型獲得更大的有效載荷 和更強(qiáng)的魯棒性,并且 最大限度減小視覺失真。 采用密匙依賴型算法選擇一個(gè)具有視覺水印容量的系數(shù)集,用來嵌入水印并使其具有 能 對(duì)抗蓄意攻擊的魯棒性。 此外,在頻率上和 區(qū)域內(nèi)部擴(kuò)展水印以避免 誤差合并 。 仿真結(jié)果顯示,在不 明顯改變視覺質(zhì)量的 情況下,有效載荷和魯棒性得到提高。 本文利用似然比檢驗(yàn)建立水印檢 測(cè)的理論框架,并用它獲得了理想的性能可控的視頻水印檢測(cè)器。 該視頻水印檢測(cè)機(jī)制具有以下優(yōu)點(diǎn)。首先,若視頻較長(zhǎng)并且應(yīng)用中檢測(cè)器響應(yīng)時(shí)間可以是任意的,則無論哪種視頻序列,檢測(cè)器的誤碼率都能夠維持。其次,檢測(cè)器的性能完全由檢測(cè)器內(nèi)部控制,而與水印嵌入系 統(tǒng)無關(guān),因此,如果視頻已被攻擊,那么可以調(diào)節(jié)水印檢測(cè)器以獲得更可靠的檢測(cè)器響應(yīng)。最后,測(cè)試了 該水印算法對(duì)一些常見信號(hào)處理攻擊的魯棒性,如濾波器、 50%的削去攻擊、加性白噪聲 N( 0,)和一個(gè)尋常蓄意攻擊。仿真結(jié)果表明,該水印算法可以對(duì)抗這些攻擊。 參考文獻(xiàn) [1] I. 1449610 and I. R. , Advanced Video Coding 2020. [2] I. E. G. Richardson, and MPEG4 Video Compression. New York: Wiley, 2020. [3] G. Qiu, P. Marziliano, A. T. Ho, D. He, and Q. Sun, ―A hybrid watermarking scheme for ,‖ in Proc. 17th Int. Conf. Pattern Recognition, Aug. 2020, vol. 4, no. 4, pp. 865–868. [4] M. Noorkami and R. M. Mersereau, ―Compresseddomain video watermarking for ,‖ in Proc. IEEE Int. Conf. Image Processing, Genoa, Italy, Sep. 2020, vol. 2, pp. 890–893. [5] . Wu and . Wang, ―Robust watermark embedding/detection algorithm for ,‖ J. Electron. Imag., vol. 14, no. 1, pp. 13 013—130139, Jan. 2020. [6] H. A. Peterson, A. J. Ahumada, and A. Watson, ―An improved detection model for DCT coefficient quantization,‖ in Proc. SPIE—Int. Soc. Optical Engineering, San Jose, CA, Feb. 1993, vol. 1913, pp. 191–201. [7] A. B. Watson, ―DCT quantization matrices visually optimized for individual images,‖ in Proc. SPIE Int. Conf. Human Vision, Visual Processing and Digital Display, San Jose, CA, Feb. 1993, vol. 1913, pp. 202–216. [8] R. B. Wolfgang, C. I. Podilchuk, and E. J. Delp, ―Perceptual watermarks for digital images and video,‖ in Proc. SPIE—Int. Soc. Optical Engineering, San Jose, CA, Jan. 1999, vol. 3567, pp. 40–51. [9] D. Simitopoulos, S. Tsaftaris, N. Boulgouris, and M. G. Strintzis, ―Compresseddomain video watermarking of MPEG streams,‖ in Proc. IEEE Int. Conf. Multimedia and Expo, Lausanne, Switzerland, Aug. 2020, vol. 1, pp. 569–572. [10] H. S. Malvar, A. Hallapuro, M. Karczewicz, and L. Kerofsky, ―Lowplexity transform and quantization in ,‖ IEEE Trans. Circuits Syst. Video Technol., vol. 13, no. 7, pp. 598–603, Jul. 2020. [11] H. A. Peterson, H. Peng, J. Morgan, and W. Pennebaker, ―Quantization of color image ponents in the DCT domain,‖ in Proc. SPIE, 1991, vol. 1453, pp. 210–222. [12] F. Hartung and B. Girod, ―Watermarking of unpressed and pressed video,‖ Signal Process., vol. 66, no. 3, pp. 283–301, May 1998. [13] H. L. Van Trees, Detection, Estimation, and Modulation Theory Part I. New York: Wiley, 1968. [14] R. H. Jonsson, ―Adaptive subband coding of video using probability distribution models,‖ . dissertation, Georgia Inst. Technol., Atlanta, GA, 1994. [15] K. A. Birney and T. R. Fischer, ―On the modeling of DCT and subband image data for pression,‖ IEEE Trans. Image Process., vol. 4, no. 2, pp. 186–193, Feb. 1995. [16] W. Zeng, ―A statistical watermark detection technique without using original images for resolving rightful ownerships of digital images,‖ IEEE Trans. Image Process., vol. 8, no. 11, pp. 1534–1548, Nov. 1999. [17] Refrence Software Group. [Online]. Available: [18] A. M. Alattar, E. T. Lin, and M. U. Celik, ―Digital watermarking of low bit rate advanced simple profile MPEG4 pressed video,‖ IEEE Trans. Circuits Syst. Video Technol., vol. 13, no. 8, pp. 787–800, Aug. 2020. [19] M. Noorkami and R. M. Mersereau, ―Towards robust presseddomain video watermarking for ,‖ in Proc. SPIE—Security, Steganography, and Watermarking of Multimedia Contents VIII, San Jose, CA, Jan. 2020, vol. 6072.
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