Gray scale video watermarking algorithm based on core tensor
A core tensor and grayscale video technology, applied in image watermarking, computing, computer security devices, etc., can solve problems such as weak robustness and failure to consider the correlation of adjacent video frames, etc., to achieve imperceptibility Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0057]This embodiment provides a grayscale video watermarking algorithm based on core tensor, such as figure 1 shown, including steps:
[0058] S11. Carrying out Arnold transformation to the video watermark;
[0059] S12. Decompose each video tensor by Tucker and obtain the core tensor;
[0060] S13. Quantify and correct the acquired core tensor;
[0061] S14. Reconstruct the quantized and corrected core tensor to generate a reconstructed watermarked video.
[0062] In this embodiment, a video V whose size is M×N is set first, and the size of the watermark B is m×m. Assuming that each K frame of grayscale video is represented as a third-order tensor, each tensor A i (1≤i≤m 2 ) has a size of M×N×K.
[0063] The method of watermark embedding is as follows: figure 2 shown.
[0064] S11. Carrying out Arnold transformation to the video watermark;
[0065] In order to eliminate the spatial correlation between watermark pixels, use the Arnold transform to scramble the water...
Embodiment 2
[0088] This embodiment provides a grayscale video watermarking algorithm based on core tensor, such as image 3 shown, including steps:
[0089] S11. Carrying out Arnold transformation to the video watermark;
[0090] S12. Decompose each video tensor by Tucker and obtain the core tensor;
[0091] S13. Quantify and correct the acquired core tensor;
[0092] S14. Reconstruct the quantized and corrected core tensor to generate a reconstructed watermarked video;
[0093] S15. Decompose and obtain the core tensor by Tucker for each reconstructed watermarked video;
[0094] S16. Determine watermark information according to the obtained core tensor;
[0095] S17. Obtain original watermark information through Arnold inverse transformation.
[0096] In this embodiment, a video V whose size is M×N is set first, and the size of the watermark B is m×m. Assuming that each K frame of grayscale video is represented as a third-order tensor, each tensor A i (1≤i≤m 2 ) has a size of M×N...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com