| ชื่อเรื่อง | : | A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform |
| นักวิจัย | : | Aung, Aye , Ng, Boon Poh , Rahardja, Susanto |
| คำค้น | : | DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing. |
| หน่วยงาน | : | Nanyang Technological University, Singapore |
| ผู้ร่วมงาน | : | - |
| ปีพิมพ์ | : | 2553 |
| อ้างอิง | : | Aung, A., Ng, B. P. & Rahardja, S. (2010). A Robust Phase Watermarking Algorithm Using Conjugate Symmetric Sequency-ordered Complex Hadamard Transform. 2010 Asia Pacific Signal and Information Processing Annual Summit and Conference, Biopolis, Singapore, pp.153-156. , http://hdl.handle.net/10220/7203 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | - |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | This paper presents a novel watermarking algorithm based on a newly developed transform known as conjugate symmetric sequency-ordered complex Hadamard transform (CSSCHT). The algorithm is performed in the sequency domain where the phases of the CS-SCHT coefficients are altered to convey the watermark information using the phase-shift-keying (PSK) modulation. The amplitude boost (AB) method is employed to improve the robustness of the watermarking scheme and the spread spectrum (SS) technique is adopted to increase the security of the watermark against various attacks. The robustness of the proposed scheme is investigated by various types of image attacking operations such as JPEG compression, resizing, cropping and low-pass filtering. |
| บรรณานุกรม | : |
Aung, Aye , Ng, Boon Poh , Rahardja, Susanto . (2553). A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Aung, Aye , Ng, Boon Poh , Rahardja, Susanto . 2553. "A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Aung, Aye , Ng, Boon Poh , Rahardja, Susanto . "A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2553. Print. Aung, Aye , Ng, Boon Poh , Rahardja, Susanto . A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2553.
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