A Multimedia Digital Watermark Forensics Mobile Phone

A digital watermarking and multimedia technology, applied in the field of mobile communication terminals, can solve problems such as the difficulty of judging the originality of recorded files and the inability to trace the source of the recording basis of the parties involved in the recording, and achieve the effect of strong anti-counterfeiting traceability and reliable authority

Active Publication Date: 2021-07-30
CHENGDU YUFEI INFORMATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: for multimedia digital files as the basis for evidence collection, there are non-real-time recording files as evidence collection basis for real-time evidence; The recording basis of the parties involved cannot be traced back; the originality of the recording files is difficult to judge and other problems. It is urgent to develop a method that can provide users with evidence collection and records in fields such as judicial, law enforcement, and insurance claims to ensure that the evidence chain is complete, authentic, stable, and Reliable, able to trace the source of evidence information, and can be used as a multimedia digital forensics mobile phone for legal evidence

Method used

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  • A Multimedia Digital Watermark Forensics Mobile Phone
  • A Multimedia Digital Watermark Forensics Mobile Phone
  • A Multimedia Digital Watermark Forensics Mobile Phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0197] Embodiment 1: Adopt the multimedia digital watermark evidence collecting mobile phone of Android4.0 (API9) operating system

[0198] Equipped with a 5-megapixel auto-focus camera (including front and rear cameras), the resolution of the camera is 400×800, and the video resolution is 480p; the high-performance micro-CPU processor and ROM integrated on the main board of the mobile phone circuit With the RAM chip, its operating processing frequency is 1.3GHZ; the mobile phone operating system that cooperates with it adopts the Android4.0 (API9) operating system;

[0199] Using the mobile phone read-write memory RAM matched with the high-performance micro CPU processor, its running temporary memory is 1G, the internal storage of the mobile phone is 4G, and the external storage of the mobile phone is 2G;

[0200] The Android4.0 (API9) operating system is provided with: a digital watermark information processing system mainly constructed with a digital watermark algorithm, an...

Embodiment 2

[0234] Embodiment 2: Multimedia digital watermark forensics mobile phone using iOS 8.0 beta1 operating system

[0235] Equipped with an 8-megapixel auto-focus camera (including front and rear cameras), the camera captures pictures with a resolution of 600×800, and a video resolution of 480p; a high-performance micro-CPU processor and ROM integrated on the mobile phone circuit board With the RAM chip, its operating processing frequency is 1.3GHZ; the mobile operating system that cooperates with it selects the operating system above iOS8.0 beta1;

[0236] Adopt the mobile phone read-write memory RAM that matches with high-performance micro-CPU processor, its running temporary memory is in 1G, mobile phone internal storage 4G, mobile phone external storage 2G; All the other specific contents are with embodiment 1.

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Abstract

The invention discloses a multimedia digital watermark forensics mobile phone, which is based on image, audio and video fragile digital watermark embedding and extraction technology, and utilizes the unique stability, privacy, security and vulnerability of fragile digital watermark to ensure the recording of multimedia data An intelligent forensic mobile phone developed for integrity, authenticity, stability, reliability and authority. Users use this mobile phone to embed imperceptible and unmodifiable fragile digital watermark information including unique identity confirmation in real-time in the captured images, audio and video. Images, audio, and videos with this fragile watermark can be used and distributed normally, but no artificial modification is allowed. The authenticity of the document is identified according to whether the photographed digital document contains the digital watermark information. The evidence collection process is fast, efficient, accurate, safe, and convenient. The content of the evidence collection has the uniqueness of digital evidence and the legal authority of the use of evidence. It can be applied to evidence collection and records in the fields of justice, law enforcement, and claims.

Description

technical field [0001] The invention belongs to mobile communication terminal technology. It specifically involves the application in forensic records and other fields, which can effectively prevent multimedia digital files from being edited and forged, and can track and trace the source of multimedia data files for forensics. Background technique [0002] With the development of information digitization, multimedia digital evidence such as photos, audio, and video has begun to be used in judicial evidence collection, law enforcement records, insurance claims and other fields. It has become an inevitable trend for digital evidence to be used as legal evidence in the law enforcement process. However, digital evidence has attributes that can be tampered without trace, easily edited, and forged. Therefore, multimedia digital files are used as the basis for evidence collection, and non-real-time recording files are used as evidence for real-time evidence collection; the person ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/72439H04M1/72463G06T1/00H04N19/467
CPCG06T1/0007G06T1/0042H04N19/467H04M1/72439H04M1/72463
Inventor 华建和杨季春康清波温剑建刘安立徐波范力
Owner CHENGDU YUFEI INFORMATION ENG
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