Invention Grant
- Patent Title: Zero-watermarking registration and detection method for HEVC video streaming against requantization transcoding
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Application No.: US15045256Application Date: 2016-02-17
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Publication No.: US09947065B2Publication Date: 2018-04-17
- Inventor: Gangyi Jiang , Jing Wang , Mei Yu , Fen Chen
- Applicant: Ningbo University
- Applicant Address: CN Ningbo, Zhejiang
- Assignee: Ningbo University
- Current Assignee: Ningbo University
- Current Assignee Address: CN Ningbo, Zhejiang
- Priority: CN201510664347 20151015
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06T1/00 ; H04N19/467 ; H04N19/40

Abstract:
A zero-watermarking registration and detection method for HEVC video streaming against requantization transcoding is provided. To increase an attack-resistance of a registration watermarking, the registration method firstly processes depth values corresponding to respective brightness blocks in a target video streaming with a depth binarization during constructing registration watermarking information through depth features, because the depth binarization well reflects a robustness of the registration watermarking. A first watermarking information matrix including a part of the depth values after the depth binarization is encrypted with a random matrix, so as to increase a safety of the registration watermarking. The registration method directly generates zero-watermarking through the depth features of the video streaming without modifying original carrier information and affecting a watermarking transparency. Meanwhile, the registration method has a strong robustness against attacks, such as the requantization transcoding of quantization parameters within a certain range of variation and common signal processing.
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