TWI747210B - Method for gradually fusing heterogeneous network points in the same tone to form an anti-counterfeiting network point structure - Google Patents

Abstract

The present invention relates to a method for forming an anti-counterfeiting dot structure by gradually fusing heterogeneous dots at the same level. 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 screen dots of 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 dot structure at the same time. Shows 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.

Description

Method for gradual fusion of heterogeneous network points in the same tone to form an anti-counterfeiting network point structure

The present invention is a method of forming an anti-counterfeiting dot structure by gradually fusing 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 dot. No matter what conditions the screen line, dot shape and dot angle are 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 gradually fusing heterogeneous dots at the same level. 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 screen dots of 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 magnified image

(9): Gradient fusion zone

Figure 1 is a flowchart of the present invention

Figure 2 is a schematic diagram of the structure change 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 images 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 a set of dots with two different conditions through the dot generator, such as different The number of screen lines, the size of the dots and the shape of the dots A (5) and B (6); finally the two different conditions of the network are passed through the network through different network conditions, and merged into the final network point structure fusion Image (7), and the fusion magnified image (8) after the fusion image (7) is enlarged, the dot A (5), the dot B (6), and the gradual fusion area (9) in between can be seen.

It can be seen from the above that the present invention is fused into a dot structure at the same level. In this level, there are different screen lines, dot sizes and dot shapes. 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 processing, 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 gradual fusion of heterogeneous dots in the same level 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 binarization inversion filter with an inverted type; then the two binarization filters are combined with the continuous adjustment original, and a set of two types is generated through the dot generator Network points with different conditions; finally, the two 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 gradation to form an anti-counterfeiting dot structure, the dots produced by the different conditions can be different screen lines, dot sizes and dot shapes.

Images