Improved additive spread spectrum watermarking method
A technology for watermarking and watermarking information, applied in the direction of program/content distribution protection, etc., can solve the problem of unsatisfactory decoding performance, and achieve the effect of avoiding decoding errors and improving decoding performance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0029] Embodiments of the present invention will be further described in detail below in conjunction with specific drawings and examples.
[0030] The programming software used is Matlab 7.0, select figure 1 The gray image of "aircraft" with a size of 1024×768 is shown as the experimental object. Using the improved additive spread spectrum watermarking method, the specific process of embedding the watermark to the original image of the experiment is as follows.
[0031] 1. Divide the "aircraft" gray image into 8×8 pixel blocks, and perform discrete cosine transform (Discrete Cosine Transform, DCT) on these pixel blocks; embed the watermark bit information into the DCT coefficients (except DC coefficients); For every three 8×8 image blocks, 1-bit watermark information is embedded, that is, each bit of watermark information is embedded three times; therefore, it can be calculated that using this embedding method, the image can embed a total of 4096 bits of watermark information...
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