Raster application method with anti-duplication function

An application method and anti-copy technology, which is applied in image data processing, instruments, image data processing, etc., can solve problems such as poor anti-counterfeiting, doubts about the anti-counterfeiting of anti-counterfeiting gratings, and difficulty in distinguishing the authenticity of linear gratings, so as to ensure anti-counterfeiting performance and strong The effect of anti-counterfeiting reliability and integrity of latent image information

Pending Publication Date: 2018-12-07
NANJING FORESTRY UNIV
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technology, although the hidden information can be revealed by using a linear grating, since the setting of the screening parameters of the background color block is relatively fixed, the linear grating made according to the screening parameters of the background color block is easy to be copied and has poor anti-counterfeiting performance. Gratings can be easily faked
When using linear gratings to extract hidden information, it is difficult to distinguish the authenticity of linear gratings, which makes the anti-counterfeiting of anti-counterfeiting gratings questionable

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
  • Raster application method with anti-duplication function
  • Raster application method with anti-duplication function
  • Raster application method with anti-duplication function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] see figure 1In this embodiment, a grating application method with an anti-copy function is provided, comprising the following steps:

[0062] Step (1), select the source image and anti-counterfeiting identification

[0063] Select the source image: select a dark tone image whose color mode is CMYK, resolution is 2450dpi, and size is 4×4.8cm, and name it "source image.tif";

[0064] Set the anti-counterfeiting mark: In this embodiment, the anti-counterfeiting mark is "T", and a new color mode is CMYK in Adobe Photoshop software, the resolution is 2450dpi, the size is 4 * 4.8cm, and the background content is a transparent file, which is used in the file "Text Tool" inserts a "T" with a font size of 48 points and a font size of 48 points, and names it "anti-counterfeiting logo.tif";

[0065] Step (2), screening

[0066] Open the "source image.tif" in Adobe Photoshop software, separate the four channels of cyan C, magenta M, yellow Y, and black K, perform "image / mode / bit...

Embodiment 2

[0084] see Figure 8 , 9 And 10, compared with embodiment 1, the difference of embodiment 2 is:

[0085] (1) The content of the source image is different, and the input resolution of the source image is 1440dpi, the size is 4×3.75cm, and the screen line number is 180lpi; the anti-counterfeiting mark is a graphic;

[0086] (2) Since the number of screen lines is different, the corresponding displacement is also different;

[0087] (3) The identification gratings presented correspondingly are different.

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 discloses a raster application method with an anti-duplication function, and relates to the technical field of printing anti-counterfeiting. The raster application method comprises the following steps: a step (1), selecting a source image and an anti-counterfeit identifier; a step (2), performing screening; a step (3), calculating the displacement amount; a step (4), embedding the anti-counterfeiting identifier; a step (5), producing an identification raster; and a step (6), extracting the anti-counterfeiting identifier. The invention adopts an anti-duplication identification raster, and has strong anti-counterfeiting reliability in the anti-counterfeiting application of the shadow image.

Description

technical field [0001] The invention belongs to the technical field of printing anti-counterfeiting, and in particular relates to a grating application method with an anti-copy function. Background technique [0002] With the continuous development of the modern printing industry, advanced printing equipment and copying equipment are widely used. In this case, some criminals use high-precision printing equipment to seek high profits by forging the trademarks and outer packaging of high-end products. In order to resist the increasingly rampant phenomenon of counterfeit and shoddy products, the means of using anti-counterfeiting technology to maintain product quality and business reputation has received great attention from product companies. Among them, grating anti-counterfeiting technology has become a research hotspot due to its advantages of not relying on printing equipment and low production cost. [0003] The invention patent with the notification number CN103903216B...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021G06T2201/0065
Inventor 王琪韩雪莹葛乃馨孙和远
Owner NANJING FORESTRY UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap