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  • Ký hiệu PL/XG: 005.74
    Nhan đề: Pixel value ordering (PVO) has been considered as an effective reversible data hiding method for high embedding capacity and good imperceptibility. This paper proposes a novel reversible data hiding based on four sorted pixels for improving the conventional PVO method. Three bits will be embedded into each 4-pixel sub—block without changing the order while the original PVO method only embeds 2 bits. In case the amount of payload is less than the embedding capacity, flatter blocks will be prioritized for embedding to improve image quality. To determine the flat of the block, we use 12 neighborhood pixels of the current block. Only blocks with satisfactory flatness are used for embedding. The proposed reversible data hiding not only retrieves high capacity but also gets good imperceptibility. Experimental results also show that the proposed reversible data hiding scheme outperforms several widely schemes using pixel value ordering method in terms of both image quality and embedding capacity. /
DDC 005.74
Tác giả CN Cao, Thi Luyen
Nhan đề Pixel value ordering (PVO) has been considered as an effective reversible data hiding method for high embedding capacity and good imperceptibility. This paper proposes a novel reversible data hiding based on four sorted pixels for improving the conventional PVO method. Three bits will be embedded into each 4-pixel sub—block without changing the order while the original PVO method only embeds 2 bits. In case the amount of payload is less than the embedding capacity, flatter blocks will be prioritized for embedding to improve image quality. To determine the flat of the block, we use 12 neighborhood pixels of the current block. Only blocks with satisfactory flatness are used for embedding. The proposed reversible data hiding not only retrieves high capacity but also gets good imperceptibility. Experimental results also show that the proposed reversible data hiding scheme outperforms several widely schemes using pixel value ordering method in terms of both image quality and embedding capacity. / Cao Thi Luyen, Nguyen Kim Sao, Le Quang Hoa..[and others]
Từ khóa tự do Pixel value ordering
Từ khóa tự do Reversible data hiding
Tác giả(bs) CN Le, Quang Hoa
Tác giả(bs) CN Nguyen, Kim Sao
Tác giả(bs) CN Ta, Minh Thanh
Nguồn trích Tạp chí Tin học và Điều khiển học = Journal of Computer Science And Cybernetics 2022tr. 64-79 Số: 02
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10010|aCao, Thi Luyen
245 |a Pixel value ordering (PVO) has been considered as an effective reversible data hiding method for high embedding capacity and good imperceptibility. This paper proposes a novel reversible data hiding based on four sorted pixels for improving the conventional PVO method. Three bits will be embedded into each 4-pixel sub—block without changing the order while the original PVO method only embeds 2 bits. In case the amount of payload is less than the embedding capacity, flatter blocks will be prioritized for embedding to improve image quality. To determine the flat of the block, we use 12 neighborhood pixels of the current block. Only blocks with satisfactory flatness are used for embedding. The proposed reversible data hiding not only retrieves high capacity but also gets good imperceptibility. Experimental results also show that the proposed reversible data hiding scheme outperforms several widely schemes using pixel value ordering method in terms of both image quality and embedding capacity. / |cCao Thi Luyen, Nguyen Kim Sao, Le Quang Hoa..[and others]
653 |aPixel value ordering
653 |aReversible data hiding
700 |aLe, Quang Hoa
700 |aNguyen, Kim Sao
700 |aTa, Minh Thanh
7730 |tTạp chí Tin học và Điều khiển học = Journal of Computer Science And Cybernetics |d2022|gtr. 64-79|x1813-9663|i02
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