Unlock instant, AI-driven research and patent intelligence for your innovation.

Anti-fake authentication method for uploaded network picture

An image and network technology, applied in the field of anti-counterfeiting authentication, can solve the problem of large loss of watermark information, and achieve the effect of improving anti-cropping ability, reducing data redundancy, and eliminating inverted conjugate images.

Inactive Publication Date: 2015-01-07
UNIV OF SHANGHAI FOR SCI & TECH
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing optical holographic watermarking technology suffers from geometric attacks, such as rotation, cropping and other attacks, the extracted watermark information loses a lot

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anti-fake authentication method for uploaded network picture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The anti-counterfeiting authentication method for images uploaded through the network provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0011] figure 1 It is an algorithm flow chart of the anti-counterfeiting authentication method of the network uploaded image of the present invention.

[0012] The anti-counterfeiting authentication method for uploading images on the network comprises the following steps:

[0013] Step S-1, read the image to be uploaded, and extract the grayscale image of the B component of the image to be uploaded.

[0014] Step S-2, performing Randon transformation on the grayscale image of the B component to correct the tilt angle.

[0015] Step S-3, performing inverse DCT transformation on the corrected grayscale image of the B component to extract the QR code.

[0016] Step S-4, decoding the QR code, and judging whether there is QR code watermark information in the image to be up...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an anti-fake authentication method for an uploaded network picture. The anti-fake authentication method for the uploaded network picture is characterized by comprising the following steps that (1) a grayscale image of a B component of the picture, to be uploaded, in the RGB format is extracted; (2) Randon conversion is conducted on the grayscale image, and the grayscale image is corrected and rotated by a certain angle; (3) disperse cosine inverse transformation is conducted on the corrected grayscale image, and a QR code is extracted; (4) whether QR code watermark information exists in the picture to be uploaded is judged, if yes, the unsuccessful uploading prompt is given out, and if not, the step (5) is executed; (5) the picture, to be uploaded, containing no watermark information is encrypted.

Description

technical field [0001] The invention relates to an anti-counterfeiting authentication method when uploading network images based on optical holographic watermarks and QR codes. Background technique [0002] With the rapid development of e-commerce, online shopping has almost become the mainstream. However, the phenomenon of piracy and duplication of online commodity pictures is serious, and the anti-theft of commodity pictures is an important problem facing e-commerce today. Digital watermark anti-counterfeiting technology has good invisibility, watermark detection is simple and convenient, and the cost is low, and the form is diverse, so it is very suitable for the anti-theft of network commodities. [0003] Optical holography can record the light intensity and phase information of objects, and is recognized as the most suitable technology for watermarking algorithms. However, when the existing optical holographic watermarking technology suffers from geometric attacks, su...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06T1/00G06F21/16
Inventor 包观笑孙刘杰
Owner UNIV OF SHANGHAI FOR SCI & TECH