数字水印添加、提取方法、装置、电子设备和可读介质
By encrypting and segmenting the watermark information in the spreadsheet, and determining the cell position based on the watermark strength, the problem of easily detectable visible watermarks is solved, thus achieving the concealment and stability of digital watermarks.
CN114692100BActive Publication Date: 2026-07-17BEIJING WODONG TIANJUN INFORMATION TECH CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING WODONG TIANJUN INFORMATION TECH CO LTD
- Filing Date
- 2022-03-30
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In existing technologies, visible watermarks added to spreadsheets are easily detected and removed, resulting in insufficient concealment of the watermarks.
Method used
By encrypting the watermark information to be added, encoding it in segments, and generating cell position information based on the target watermark strength, the encoded watermark information is added to the cells of a spreadsheet, thus achieving the concealment of digital watermarks.
Benefits of technology
It improves the concealment of watermarks, making them more difficult to remove, thus enhancing document security and watermark stability.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN114692100B_ABST
Abstract
本公开的实施例公开了数字水印添加、提取方法、装置、电子设备和可读介质。该方法的一具体实施方式包括：对待添加水印信息进行加密处理，得到加密水印信息。对加密水印信息进行分段编码，得到至少一个编码水印信息。根据目标水印强度，生成电子表格中待添加信息的至少一个单元格中每个单元格的位置信息，得到位置信息集合。根据位置信息集合，将至少一个编码水印信息添加到至少一个单元格中。该实施方式与信息安全有关，提高了水印隐蔽性，使水印不易被去除。
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