Multiple bit digital watermark method capable of resisting printing, scanning and geometric transformation
A technology that is resistant to printing, scanning, and geometric transformation. It is applied in image data processing, image data processing, instruments, etc., and can solve problems such as large image distortion.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0065] The method of the present invention will be further elaborated below in conjunction with specific examples.
[0066] As shown in Figures 5, 6, 7, and 8, in this example, this method is used to embed 60 bits of meaningful information in the Lena 512×512 grayscale image. Here, 60 bits of meaningful information can be directly embedded in the image, but in order to better resist attacks such as noise pollution, error correction coding can also be performed on the 60 bits of information, such as turbo coding, and the sequence obtained after coding can replace the sequence invented above. The meaningful information sequence mentioned in the content is embedded. Correspondingly, when the watermark is detected, error correction decoding is also required to recover 60 bits of meaningful information.
[0067] Figure 8 is the r obtained from the image detection shown in Figure 7 φ (k,l) distribution map. According to the figure r φ The (k, l) translation coordinates correspond...
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