TW202137139A - Method of combining anti-counterfeiting screen dot structure through gradual fusion heterogeneous screen dots in the same tone capable of merging screen dots in similar conditions in the screen dot structure of a single tone - Google Patents

Abstract

The invention is a method of combining anti-counterfeiting screen dot structure through gradual fusion heterogeneous screen dots in the same tone, which mainly converts a continuous tone grading filter into a binary filter and an inverted filter in specific conditions. By combining the generated two binary filters with the continuous tone manuscript respectively, the screen dot generator generates screen dots in different conditions to merge the different screen dots into the final image to simultaneously show the screen dots in the same tone level so that there are different dot screening lines, screen dot sizes, and screen dot shapes within the same level. Different screen dots are fused according to the gradually changed position, and the characteristics of different screen dots can be independently expressed at some positions. In other words, the screen dots in similar conditions exist in a screen dot structure of a single tone at the same time, exhibiting the characteristics of different screen dots in some areas and the effect of fusing different dots in some areas, thereby achieving the effect of enhancing the anti-counterfeiting and identification capabilities.

Description

Method for gradually fusing heterogeneous network points in the same tone to form an anti-counterfeiting network point structure

The present invention is a method for forming an anti-counterfeiting dot structure by gradual fusion of heterogeneous dots in the same tone. Dots with different line numbers, shapes, angles and other conditions are used. Through the gradual fusion method, dots with similar conditions exist in a single tone at the same time. The structure of the outlets, and shows the characteristics of different outlets in some areas, and the effect of fusion of different outlets in some areas, in order to achieve the purpose of anti-counterfeiting identification.

The dot structure of general printed matter is mostly represented by the size and size of the same kind of dot. The size of the dot changes in different levels. Regardless of the number of screen lines, dot shapes and dot angles used, there can only be one dot size for the same gradation. The size of the structure cannot provide an effective anti-counterfeiting identification function, and there is a need for improvement.

The present invention relates to a method for forming an anti-counterfeiting dot structure by gradual fusion of heterogeneous dots in the same tone. It mainly converts a continuous grading filter into a binary filter and an inverted filter under specific conditions. After the binarization filter is combined with the continuous tone manuscript, the dots with different conditions are generated by the dot generator, and the different dots are merged into the final image to simultaneously represent the dots in the same tone level, so that there are different nets in this level at the same time. The number of screen lines, dot size, and dot shape are combined with different dots according to the position of the gradient, and the characteristics of different dots can be independently expressed in certain positions, that is, dots with similar conditions exist in a single-tone net at the same time Dot structure, showing the characteristics of different outlets in some areas, and the effect of fusion of different outlets in some areas, to achieve the effect of enhancing the ability of anti-counterfeiting identification.

(2): Graduated filter

(2): Binarization filter

(3): Reverse filter

(4): Continuously adjust the original

(5): Outlet A

(6): Outlet B

(7): Fusion image

(8): Fusion of enlarged images

(9): Gradient fusion zone

Figure 1 is a flowchart of the present invention

Figure 2 is a schematic diagram of the structural changes of the fusion heterogeneous network of the present invention

Please refer to Figures 1 and 2, which are the flow chart and schematic diagram of the method of forming an anti-counterfeiting dot structure by gradual fusion of heterogeneous dots at the same level of the present invention. First, a continuous gradation filter (1) of a specific shape is generated, for example Gradient image from 0 to 255 levels; then the continuous gradation filter is converted to a binarization filter (2) under specific conditions, and another inverted type is generated from the binarization filter (2) Binarization reversal filter (3); then combine the two binarization filters with the continuous adjustment original (4), and generate dots with different conditions through the dot generator, such as different screen lines , Dot size and dot shape dot A (5), dot B (6); finally the two different conditions of the dots are passed through the network through different network conditions, and then merged into the final dot structure fusion image (7), The fusion magnified image (8) after the fusion image (7) is enlarged can see the dot A (5), the dot B (6), and the gradual fusion area (9) therebetween.

It can be seen from the above that the present invention is fused into a dot structure in the same gradation. In this level, there are different screen lines, dot sizes and dot shapes at the same time. It merges different dots according to the position of the gradation, and can be used in a certain These locations independently express the characteristics of different outlets, that is, outlets with similar conditions exist in a single-tone dot structure at the same time, showing the characteristics of different outlets in some areas, and the effect of fusion of different outlets in some areas, so it can be machined Visual automation After image acquisition, identification and positioning, Fourier transform and binarization process, it can be used as the effect of simple and fast judgment of authenticity and practical improvement.

(1): Graduated filter

(2): Binarization filter

(3): Reverse filter

(4): Continuously adjust the original

(5): Outlet A

(6): Outlet B

(7): Fusion image

Claims (2)

A method of gradually fusing heterogeneous dots in the same tone to form an anti-counterfeiting dot structure. First, a continuous-adjusting gradient filter of a specific shape is generated; then the continuous-adjusting gradient filter is converted to a binary filter under specific conditions, and the The binarization filter produces another type of binarization inversion filter in the inverted form; then the two binarization filters are combined with the continuous adjustment manuscript respectively, and the dots with different conditions are generated through the dot generator; Finally, the two kinds of network points with different conditions are passed through the network through different network conditions, and then merged into the final network point structure fusion image. As described in claim 1, the method of gradually fusing heterogeneous dots in the same tone to form an anti-counterfeiting dot structure, which produces dots with different conditions can be different screen lines, dot sizes and dot shapes.

Images