CN110942126A - Method for generating star array three-dimensional code - Google Patents
Method for generating star array three-dimensional code Download PDFInfo
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- CN110942126A CN110942126A CN201911089273.7A CN201911089273A CN110942126A CN 110942126 A CN110942126 A CN 110942126A CN 201911089273 A CN201911089273 A CN 201911089273A CN 110942126 A CN110942126 A CN 110942126A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
- G06K19/06196—Constructional details
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K2019/06215—Aspects not covered by other subgroups
- G06K2019/06225—Aspects not covered by other subgroups using wavelength selection, e.g. colour code
Abstract
The invention discloses a method for generating a star array three-dimensional code, which comprises the following steps: the method comprises the steps of obtaining a two-dimensional code picture containing product information, obtaining a first background picture, and setting the debugging rate, the size and the contrast threshold of a three-dimensional code to be generated; analyzing the two-dimensional code picture to obtain a corresponding two-dimensional code grid graph, and setting a regular five-pointed star graph in a grid of bit 1 data in the generated two-dimensional code grid graph; adjusting the generated two-dimensional code grid graph and the first background picture to be preset sizes; performing transparentization processing on the first background picture to obtain a second background picture; and taking the second background picture as a background picture layer, merging the two-dimensional code grid graph and the pixel points of the second background picture, identifying the color of the merged pattern, and performing light-coloring treatment to ensure that the ratio of the color contrast of the regular five-pointed star graph in the grid to the color contrast of the second background picture in the grid is greater than or equal to a preset contrast threshold value, thereby obtaining the three-dimensional code.
Description
Technical Field
The invention relates to the technical field of computer information, in particular to a method for generating a star array three-dimensional code.
Background
Due to the heat of the era of mobile internet, two-dimensional codes are applied all the time, and the most used two-dimensional code at present is a QRCode code which is a square two-dimensional code formed by combining black squares and white squares. However, with the popularization of electronic commerce, more and more merchants need to embed two-dimensional code information for shopping into colored product promotion pictures. However, the existing black-white two-dimensional code cannot be fused with background patterns with different colors. Mainly because of the restriction of the two-dimension code coding mode, the two-dimension code can not be randomly presented with various effects when beautified, and is not beautified and personalized, as shown in fig. 1, the common beautifying method at present embeds an image or a mark in the center of the two-dimension code, the method restricts the position of a modification module area, the image area only occupies a small part of the two-dimension code, is not particularly obvious, and is far from sufficient for beautifying the two-dimension code.
Therefore, for the conventional two-dimensional code, it is necessary to provide a new two-dimensional code generation method to fuse the two-dimensional code pattern into various colored background patterns, improve the overall visual effect, and expand the commercial application range of the two-dimensional code, thereby increasing the commercial use value of the two-dimensional code and facilitating the market promotion of the merchant.
Disclosure of Invention
The invention provides a method for generating a star array three-dimensional code, aiming at solving the problems that the existing black-white two-dimensional code is not beautified or personalized enough and is not beneficial to market propaganda of merchants.
In order to achieve the purpose of the invention, the technical scheme is as follows: a method for generating a star array three-dimensional code comprises the following steps:
s1: acquiring a two-dimensional code picture containing product information, acquiring a first background picture, and setting the debugging rate, the size and the contrast threshold of a three-dimensional code to be generated;
s2: analyzing the two-dimensional code picture to obtain a data matrix generated after binary coding is carried out on product information, generating a two-dimensional code grid graph corresponding to the data matrix, and setting a regular five-pointed star graph in a grid of bit 1 data in the generated two-dimensional code grid graph;
s3: adjusting the generated two-dimensional code grid graph and the first background picture to be preset sizes;
s4: performing transparentization processing on the first background picture to obtain a processed second background picture;
s5: and taking the second background picture as a background picture layer, converting the color space of the background picture layer from RGB into CMYK, merging the two-dimensional code grid graph and the pixel points of the second background picture, identifying the color of the merged pattern, and performing light-coloring treatment to ensure that the color contrast of the right five-pointed star graph in the grid and the color contrast of the second background picture in the grid are greater than or equal to a preset contrast threshold value, thereby obtaining the three-dimensional code.
Preferably, the product information includes origin information, composition information, recording event, title, logistics information, and manufacturer information of the product.
Preferably, in step S2, the regular five-pointed star pattern is located in the middle of the grid of the bit 1 data, and the size of the regular five-pointed star pattern is smaller than the size of the grid of the bit 1 data; filling the regular five-pointed star graph into the whole two-dimensional code grid graph according to the following formula
Number of radians of central angle: ch 72 pi/180
x1＝x0
x2＝x0-sin(ch)*r
x3＝x0+sin(ch)*r
x4＝x0-sin(ch/2)*r
x5＝x0+sin(ch/2)*r
y1＝y0-r；
y2＝y0-cos(ch)*r
y3＝y2
y4＝y0+cos(ch/2)*r
y5＝y4
bx＝x0+cos(ch)*tan(ch/2)*r
by＝y2
First polygon three-point coordinates: (x2, y2), (x5, y5), (bx, by)
Second polygon four-point coordinates: (x1, y1), (bx, by), (x3, y3), (x4, y4)
Wherein x represents the abscissa of the regular five-pointed star figure; y represents the ordinate of the regular five-pointed star figure; r the width of the regular five-pointed star pattern.
Preferably, in step S4, the transparentizing process extracts RGB primary color information of the first background picture by using a brush tool to transparentize a white portion of the first background picture.
Still further, in step S5, the color space of the background layer is converted from RGB to CMYK by the following specific conversion formula:
R′＝R/255
G′＝G/255
B′＝B/255
K＝1-MAX(R′,G′,B′)
C＝(1-R′-K)/(1-K)
M＝(1-G′-K)/(1-K)
Y＝(1-B′-K)/(1-K)
in the formula, R represents a red numerical value, G represents a green numerical value, B represents a blue numerical value, K represents a cyan numerical value, M represents a magenta numerical value, Y represents a yellow numerical value, and K represents a black numerical value.
And further, merging the two-dimensional code grid graph and the pixel points of the second background picture, specifically as follows:
detecting grids in the two-dimensional code grids where the bit 0 data and the bit 1 data are located and color information of a second background picture corresponding to the grids;
for the grid of the bit 0 data, filling the color of the background picture corresponding to the grid into the whole grid; filling white for the background picture corresponding to the grid as a transparent part;
for the grid of the bit 1 data, the part of the grid except the regular five-pointed star graph is filled with the corresponding area of the second background picture.
Still further, the contrast threshold is a ratio of a color contrast of a grid in the two-dimensional code grid pattern to a color contrast of a regular five-pointed star pattern.
The invention has the following beneficial effects: according to the three-dimensional code generation method provided by the invention, under the condition that the two-dimensional code value is not influenced, the background picture is subjected to transparency processing, so that the two-dimensional code and the background picture are integrated, the two-dimensional code picture is integrated into the background pictures with various colors, and the regular five-pointed star graph is arranged in the two-dimensional code grid picture, so that the overall visual effect is improved, the commercial application range of the two-dimensional code is expanded, the commercial use value of the two-dimensional code is increased, and the market propaganda of a merchant is facilitated.
Drawings
Fig. 1 is a common personalized two-dimensional code.
Fig. 2 is a schematic diagram of the flow steps described in this embodiment.
Fig. 3 is a two-dimensional code picture according to the present embodiment.
Fig. 4 is a first background picture according to the present embodiment.
Fig. 5 is a schematic diagram of the three-dimensional code generated in the present embodiment.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description.
Example 1
As shown in fig. 2, a method for generating a star array three-dimensional code includes the following steps:
s1: firstly, generating a two-dimensional code picture containing product information by a QRCode technology according to the product information, as shown in FIG. 3; then acquiring a two-dimensional code picture and a first background picture, and setting the debugging rate, the size and the contrast threshold of the three-dimensional code to be generated;
the product information described in this embodiment includes origin information, component information, recording event, title, logistics information, and manufacturer information of the product.
S2: analyzing the two-dimensional code picture, specifically reading a two-dimensional code picture stream, locking the shape of the feature frame, and performing cycle inspection on each of four corners of the two-dimensional code picture; binary coding is carried out on the obtained product information to generate a data matrix, a two-dimensional code grid graph is generated corresponding to the data matrix, and a regular five-pointed star graph is arranged on a grid of bit 1 data in the generated two-dimensional code grid graph; in this embodiment, the grid length of the two-dimensional code grid graph is calculated, and the Graphics2D is used to set the regular five-pointed star graph in the middle of the grid on the obtained two-dimensional code grid graph, wherein the inch of the regular five-pointed star graph grid is smaller than the inch of the grid.
The regular five-pointed star graph is positioned in the middle of the grid of the bit 1 data, and the whole two-dimensional code grid graph is filled according to the following formula
Number of radians of central angle: ch 72 pi/180
x1＝x0
x2＝x0-sin(ch)*r
x3＝x0+sin(ch)*r
x4＝x0-sin(ch/2)*r
x5＝x0+sin(ch/2)*r
y1＝y0-r；
y2＝y0-cos(ch)*r
y3＝y2
y4＝y0+cos(ch/2)*r
y5＝y4
bx＝x0+cos(ch)*tan(ch/2)*r
by＝y2
First polygon three-point coordinates: (x2, y2), (x5, y5), (bx, by)
Second polygon four-point coordinates: (x1, y1), (bx, by), (x3, y3), (x4, y4)
Wherein x represents the abscissa of the regular five-pointed star figure; y represents the ordinate of the regular five-pointed star figure; r the width of the regular five-pointed star pattern.
S3: and adjusting the generated two-dimensional code grid graph and the first background picture to be preset sizes.
S4: extracting RGB primary color information of the first background picture from the first background picture through a brush tool of java language, and carrying out transparentization on a white part in the first background picture to obtain a processed second background picture.
S5: taking the second background picture as a background layer, and converting the color space of the background layer from RGB into CMYK;
wherein RGB and CMYK color space conversion is used to convert the color representation from one color space to another, and CMYK (cyan-magenta-yellow-black) four color model is used for color document printing, of offset presses. Printing and printers use these four basic color inks, black as the key ink color. In the embodiment, the color space of the background layer is converted from RGB to CMYK, which is beneficial to printing the generated three-dimensional code and applying the three-dimensional code to product propaganda. The CMYK overlay is applied to a white background, reducing the amount of light reflected. The following formula is used for the conversion of the RGB to CMYK color space. RGB values from 0 to 255 and CMYK values from 0 to 1
The color space of the background layer is converted from RGB to CMYK, and the specific conversion formula is as follows:
R′＝R/255
G′＝G/255
B′＝B/255
K＝1-MAX(R′,G′,B′)
C＝(1-R′-K)/(1-K)
M＝(1-G′-K)/(1-K)
Y＝(1-B′-K)/(1-K)
in the formula, R represents a red numerical value, G represents a green numerical value, B represents a blue numerical value, K represents a cyan numerical value, M represents a magenta numerical value, Y represents a yellow numerical value, and K represents a black numerical value.
After color space conversion is completed, merging the two-dimensional code grid graph and the pixel points of the second background picture, identifying the color of the merged pattern, and performing light-coloring treatment to ensure that the color contrast of the regular five-pointed star graph in the grid and the color contrast of the second background picture in the grid are greater than or equal to a contrast threshold value; thereby obtaining the beautiful and personalized star array three-dimensional code as shown in figure 5.
The two-dimensional code grid pattern and the pixel points of the second background picture are merged as follows:
detecting grids in the two-dimensional code grids where the bit 0 data and the bit 1 data are located and color information of a second background picture corresponding to the grids;
for the grid of the bit 0 data, filling the color of the background picture corresponding to the grid into the whole grid; filling white for the background picture corresponding to the grid as a transparent part;
for the grid of the bit 1 data, the part of the grid except the regular five-pointed star graph is filled with the corresponding area of the second background picture.
The contrast threshold in this embodiment is a ratio of a color contrast of a grid in a two-dimensional code grid pattern to a color contrast of a regular five-pointed star pattern.
According to the embodiment, the white background part of the first background picture is firstly made transparent through the painting brush tool, the width of the two-dimensional code is obtained, the width of the second background picture is adjusted to adapt to the size of the two-dimensional code, and the two-dimensional code is written on the second background picture, so that the specified star-shaped picture can be displayed on the transparent part.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A method for generating a star array three-dimensional code is characterized by comprising the following steps: the method comprises the following steps:
s1: the method comprises the steps of obtaining a two-dimensional code picture containing product information, obtaining a first background picture, and setting the debugging rate, the size and the contrast threshold of a three-dimensional code to be generated;
s2: analyzing the two-dimensional code picture to obtain a data matrix generated after binary coding is carried out on product information, generating a two-dimensional code grid graph corresponding to the data matrix, and setting a regular five-pointed star graph in a grid of bit 1 data in the generated two-dimensional code grid graph;
s3: adjusting the generated two-dimensional code grid graph and the first background picture to be preset sizes;
s4: performing transparentization processing on the first background picture to obtain a processed second background picture;
s5: and taking the second background picture as a background picture layer, converting the color space of the background picture layer from RGB into CMYK, merging the two-dimensional code grid graph and the pixel points of the second background picture, identifying the color of the merged pattern, and performing light-coloring treatment to ensure that the ratio of the color contrast of the right five-pointed star graph in the grid to the color contrast of the second background picture in the grid is greater than or equal to a preset contrast threshold value, thereby obtaining the three-dimensional code.
2. The method for generating a three-dimensional star array code according to claim 1, wherein: the product information comprises origin information, component information, recording events, titles, logistics information and manufacturer information of the product.
3. The method for generating a three-dimensional star array code according to claim 1, wherein: step S2, the regular five-pointed star graph is located in the middle of the grid of the bit 1 data, and the size of the regular five-pointed star graph is smaller than that of the grid of the bit 1 data; filling the regular five-pointed star graph into the whole two-dimensional code grid graph according to the following formula
Number of radians of central angle: ch 72 pi/180
x1＝x0
x2＝x0-sin(ch)*r
x3＝x0+sin(ch)*r
x4＝x0-sin(ch/2)*r
x5＝x0+sin(ch/2)*r
y1＝y0-r；
y2＝y0-cos(ch)*r
y3＝y2
y4＝y0+cos(ch/2)*r
y5＝y4
bx＝x0+cos(ch)*tan(ch/2)*r
by＝y2
First polygon three-point coordinates: (x2, y2), (x5, y5), (bx, by)
Second polygon four-point coordinates: (x1, y1), (bx, by), (x3, y3), (x4, y4)
Wherein x represents the abscissa of the regular five-pointed star figure; y represents the ordinate of the regular five-pointed star figure; r represents the width of the regular five-pointed star pattern.
4. The method for generating a three-dimensional star array code according to claim 1, wherein: in step S4, the transparentizing process extracts RGB primary color information of the first background picture by using a brush tool, and transparentizes a white portion in the first background picture.
5. The method for generating the three-dimensional star array code according to any one of claims 1 to 4, wherein: in step S5, the color space of the background layer is converted from RGB to CMYK, and the specific conversion formula is as follows:
R′＝R/255
G′＝G/255
B′＝B/255
K＝1-MAX(R′,G′,B′)
C＝(1-R′-K)/(1-K)
M＝(1-G′-K)/(1-K)
Y＝(1-B′-K)/(1-K)
in the formula, R represents a red numerical value, G represents a green numerical value, B represents a blue numerical value, K represents a cyan numerical value, M represents a magenta numerical value, Y represents a yellow numerical value, and K represents a black numerical value.
6. The method for generating a three-dimensional star array code according to claim 5, wherein: the two-dimensional code grid graph is combined with the pixels of the second background picture, and the method specifically comprises the following steps:
detecting grids in the two-dimensional code grids where the bit 0 data and the bit 1 data are located and color information of a second background picture corresponding to the grids;
for the grid of the bit 0 data, filling the color of the background picture corresponding to the grid into the whole grid; filling white for the background picture corresponding to the grid as a transparent part;
for the grid of the bit 1 data, the part of the grid except the regular five-pointed star graph is filled with the corresponding area of the second background picture.
7. The method for generating a three-dimensional star array code according to claim 6, wherein: the contrast threshold is the ratio of the color contrast of the grid in the two-dimensional code grid graph to the color contrast of the regular five-pointed star graph.
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| CN113627577B (en) * | 2021-08-02 | 2023-05-23 | 三维码（厦门）网络科技有限公司 | Three-dimensional code generation method and anti-counterfeiting tracing system based on three-dimensional code |
| CN114239781A (en) * | 2021-12-21 | 2022-03-25 | 三维码（厦门）网络科技有限公司 | Method, equipment and storage medium for rapidly generating three-dimensional code |
| CN114418048A (en) * | 2021-12-31 | 2022-04-29 | 三维码（厦门）网络科技有限公司 | Portrait three-dimensional code rapid generation method for enhancing visual effect |
| CN114418048B (en) * | 2021-12-31 | 2023-07-18 | 三维码（厦门）网络科技有限公司 | Quick portrait three-dimensional code generation method for enhancing visual effect |
| CN116932118A (en) * | 2023-09-11 | 2023-10-24 | 广州中望龙腾软件股份有限公司 | Color adjustment method and device for graphic primitive, computer equipment and storage medium |
| CN116932118B (en) * | 2023-09-11 | 2024-01-30 | 广州中望龙腾软件股份有限公司 | Color adjustment method and device for graphic primitive, computer equipment and storage medium |
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