Electronic stamp based visible digital image watermark embedding and detection methods

A technology of electronic stamps and digital images, applied in image data processing, image data processing, instruments, etc., can solve problems such as inability to embed watermarks, weak robustness, and fragile robustness.

Active Publication Date: 2016-07-06
江苏实达迪美数据处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Generally, digital image watermarking has the following problems: 1) invisible digital image watermarking cannot give a more intuitive feeling of whether legal files have been watermarked or not; 2) the robustness of common visible digital image watermarking is generally weak, especially for Case-specific robustness to rotation, scaling, compression, and noise is brittle

Method used

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  • Electronic stamp based visible digital image watermark embedding and detection methods
  • Electronic stamp based visible digital image watermark embedding and detection methods
  • Electronic stamp based visible digital image watermark embedding and detection methods

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Embodiment Construction

[0078] The following will combine figure 1 with figure 2 The embedding and detection method of the visible digital image watermark based on the electronic seal provided by the present invention is described in detail, which is an optional embodiment of the present invention. It can be considered that those skilled in the art will not change the spirit and content of the present invention. , to be able to modify and polish it.

[0079] The following describes the technical solution of the present invention in two ways for each step, in order to describe the claimed and disclosed solutions of the present invention in a more comprehensive, detailed and accurate manner.

[0080] The invention provides a method for embedding a visible digital image watermark based on an electronic seal, comprising the following steps:

[0081] S00: Establish the rules and mapping relationships based on the conversion of each code through the following steps:

[0082] S001: Based on the ASCII ta...

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Abstract

The invention provides electronic stamp based visible digital image watermark embedding and detection methods. The embedding method comprises the following steps of S10: representing a to-be-embedded watermark by using the values of ASCII codes and then converting the codes according to predetermined rule and mapping relationship; S20: scanning an electronic stamp of the to-be-embedded watermark to obtain pixel information of the to-be-embedded watermark; S30: according to the obtained pixel information and watermark information, confirming watermark embedding way and position; and S40: according to the confirmed watermark embedding way and position, performing watermark embedding.

Description

technical field [0001] The invention relates to a watermark realization method of an electronic seal, in particular to an embedding and detection method of a visible digital image watermark based on an electronic seal. Background technique [0002] Since various electronic forms are used more and more frequently, the identification of the authenticity and legitimacy of electronic forms is an unavoidable subject. The invention proposes a visible digital image watermark technology for electronic seals widely used in electronic forms. The technology aims to provide identification basis for the authenticity and legitimacy of electronic forms by embedding visible digital image watermarks in electronic seals in electronic forms. [0003] Generally, digital image watermarking has the following problems: 1) invisible digital image watermarking cannot give a more intuitive feeling of whether legal files have been watermarked or not; 2) the robustness of common visible digital image w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021
Inventor 林涵阳张映生詹永照柯佳林庆池生友
Owner 江苏实达迪美数据处理有限公司
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