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Rotated Orthogonal Transform (ROT) for motion-compensation residual coding

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Rotated Orthogonal Transform (ROT) for motion-compensation residual coding
นักวิจัย : Gu, Zhouye , Lin, Weisi , Lee, Bu-Sung , Lau, Chiew Tong
คำค้น : DRNTU::Engineering::Computer science and engineering::Computing methodologies::Image processing and computer vision.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Gu, Z., Lin, W., Lee, B., & Lau, C. T. (2012). Rotated Orthogonal Transform (ROT) for motion-compensation residual coding. IEEE transactions on image processing, 21(12), 4770-4781. , 1057-7149 , http://hdl.handle.net/10220/13527 , http://dx.doi.org/10.1109/TIP.2012.2206045
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : IEEE transactions on image processing
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Discrete cosine transform (DCT) is the orthogonal transform that is most commonly used in image and video compression. The motion-compensation residual (MC-residual) is also compressed with the DCT in most video codecs. However, the MC-residual has different characteristics from a nature image. In this paper, we develop a new orthogonal transform-rotated orthogonal transform (ROT) that can perform better on the MC-residual than the DCT for coding purposes. We derive the proposed ROT based on orthogonal-constrained L1-Norm minimization problem for its sparse property. Using the DCT matrix as the starting point, a better orthogonal transform matrix is derived. In addition, by exploring inter-frame dependency and local motion activity, transmission of substantial side information is avoided. The experiment results confirm that, with small computation overhead, the ROT is adaptive to change of local spatial characteristic of MC-residual frame and provides higher compression efficiency for the MC-residual than DCT, especially for high- and complex-motion videos.

บรรณานุกรม :
Gu, Zhouye , Lin, Weisi , Lee, Bu-Sung , Lau, Chiew Tong . (2555). Rotated Orthogonal Transform (ROT) for motion-compensation residual coding.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Gu, Zhouye , Lin, Weisi , Lee, Bu-Sung , Lau, Chiew Tong . 2555. "Rotated Orthogonal Transform (ROT) for motion-compensation residual coding".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Gu, Zhouye , Lin, Weisi , Lee, Bu-Sung , Lau, Chiew Tong . "Rotated Orthogonal Transform (ROT) for motion-compensation residual coding."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Gu, Zhouye , Lin, Weisi , Lee, Bu-Sung , Lau, Chiew Tong . Rotated Orthogonal Transform (ROT) for motion-compensation residual coding. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.