CN102622628B - Method for generating quick response (QR) codes in rendering mode - Google Patents

Abstract

The method of generating a QR code through rendering includes the following three independent methods or a combination of two or more: replace each black and white block with a small block picture, and there are multiple small block pictures, which can be selected according to needs; the symbols of the QR code are different The parts are filled with pictures of different sizes, and the original square rectangles are changed to rounded rectangles, and the independent black and white blocks are filled with circular pictures; three-dimensional graphics are used to present QR codes. Ordinary QR codes are presented in black and white, but the present invention presents QR codes in a more beautiful manner without affecting recognition. All the QR codes generated by the present invention can be covered with small icons, so that the generated QR codes have unique characteristics of users. The present invention makes it possible to present the originally relatively monotonous QR code in a richer form.

Description

A method of generating QR code by rendering

technical field

The invention relates to a picture generation process after QR code coding is completed, by proposing a picture filling method.

technical background

Two-dimensional code technology began to appear in the late 1980s. After more than 20 years of promotion and application, it has played a huge role in the fields of information management and information exchange in many industries. The domestic QR code market is also developing rapidly. As the barcode standard recommended by China Mobile, QR code was included in the business plan of China Mobile Data Department as early as 2004. China Mobile Enterprise Standard was formulated at the end of 2005 and included in China Mobile in 2006. Mobile terminal preset planning. However, QR codes have always been used in various industries in the form of black and white blocks. For specific individuals and businesses, a QR code with its own unique form is necessary.

Contents of the invention

The purpose of the present invention is to provide a personalized QR code that can generate colorful and elegant appearance, which can solve the problem that the appearance of the original common QR code is too monotonous. A method of picture filling is proposed, and the use of rounded rectangles and three-dimensional graphics makes the original monotonous black and white QR code colorful. And it is possible to overlay a custom icon on the generated QR code, so that the generated QR code has personalized characteristics.

A method for generating QR codes through rendering, which includes the following three independent methods and can be combined:

1. Replace each black square with a small picture. There can be more than one small picture. Choose according to your needs. Replace all the white squares with a light-colored background picture. Among them, the small graphic used to replace the black square needs to be a dark image, and try to have a greater contrast with the light background image.

2. Use pictures of different sizes to fill the different parts of the QR code symbol, and change the original square corner rectangle to a round corner rectangle, and fill the independent black and white blocks with circular pictures. Among them, the replacement pictures of the outer circle of the image-seeking graphic, the inner circle of the image-seeking graphic, the common foreground part and the independent point part all use dark-colored pictures, and the background picture uses a light-colored picture, and the dark-colored picture and the light-colored picture must have a large contrast .

3. The QR code is presented using a three-dimensional graphic, and the QR code image is presented on a truncated surface.

In addition to the above three methods for generating a QR code, a method for generating a QR code through rendering also includes a method for covering a small icon on the generated QR code. The user uploads an icon to overlay the generated QR code symbol, but it must be aligned with the square of the QR code. Since the QR code has error correction capability, the error caused by coverage will not affect the recognition as long as it does not exceed the error correction capability.

The result of the QR code encoding module is a two-dimensional matrix, and each element of this matrix is reflected as a black and white block on the final picture. In the first method of the present invention, a small picture is used to replace the black square, and dark colors are used. The image replaces the black square and the white square with a light background image. The grayscale value of the dark image should be above 150, and the grayscale value of the light image should be below 100, so as to ensure correct binarization during decoding. There are multiple dark graphics that can be replaced, and you can choose according to the actual situation when generating.

The second method divides the QR code into five parts, which are: the outer circle of the image-finding graphic, the inner circle of the image-finding graphic, the common foreground part, the background part, and the independent point part. The position of each part is shown in Figure 1. Each part is filled with a picture, and all the square rectangles in the generated picture are changed to rounded rectangles, and the independent points are directly filled with circular pictures. Among them, except for the background part which uses a light-colored picture, all others are filled with a dark-colored picture. The grayscale value of the dark image should be above 150, and the grayscale value of the light image should be below 100, so as to ensure correct binarization during decoding. At the same time, where the light-colored picture and the dark-colored picture touch, the shadow is used to imitate the lighting effect to make the QR code image have a three-dimensional effect.

In the third method, a straight line is extended backward from each right-angle vertex in the ordinary QR code picture, so that the QR code appears on a truncated surface of a three-dimensional figure.

Finally, a small icon is overlaid on the generated QR code image. The small icon must be aligned with the black and white blocks of the QR code. According to the error correction rules of the QR code, it is judged whether the coverage is within the error correction capability. Try decoding again to see if the decoding is successful. If it is unsuccessful, you can try again by changing the mask or other methods. If it is still unsuccessful, you need to reduce the size of the icon or change the position of the icon, and then try again. In addition to enriching and modifying the picture itself, the present invention also proposes a method of overlaying a small icon on the QR code picture, so that it can better reflect the characteristics of a specific individual or enterprise. By judging whether the amount of error is within the error correction capability of the QR code, and trying to decode it, it is ensured that the coverage of the small icon does not affect the recognition of the QR code. When the picture is generated, you can also perform operations such as selecting and tilting the picture to further enrich the display form of the QR code symbol.

The beneficial effects of the invention are: ordinary QR codes are presented in black and white, but the invention presents the QR codes in a more beautiful manner without affecting recognition. The method of generating a QR code through rendering includes the following generation methods: the method of replacing each black and white block with a small block picture; replacing the different parts of the QR code symbol with pictures of different sizes, and replacing the square corner rectangle with a rounded rectangle method; and a method for presenting a QR code with a three-dimensional graphic. The QR codes generated by these methods can be overlaid with small icons, so that the generated QR codes have the unique characteristics of the user. The present invention makes it possible to present the originally relatively monotonous QR code in a richer form.

Description of drawings

Figure 1 is an illustration of some positions where the QR code can be personalized

Figure 2 is the QR code generated by customizing each square filling picture

Figure 3 is the QR code on the three-dimensional graphics

Figure 4 is a QR code filled with corresponding pictures in different parts

Figure 5 is the QR code covered with small icons based on the generation method in Figure 4

Detailed ways

The following is a further explanation of the technical solution adopted by the method of generating QR codes through rendering: the generation method of rendering is to generate beautiful pictures according to the encoding results, and the method of ordinary QR codes is to use Black or white rectangular blocks. The key to the improved generation method here is not to use black or white rectangular blocks, but to use dark or light-colored pictures.

The first method is very straightforward, which is to directly replace the black rectangle block with a picture of the same size as the black rectangle block in the ordinary QR code, but there are multiple pictures that can be selected, and you can choose according to the specific situation. The white rectangle is replaced with a light background image. The grayscale value of the dark image should be above 150, and the grayscale value of the light image should be below 100, so as to ensure correct binarization during decoding.

The second method divides the QR code into five parts, which are: the outer circle of the image-finding graphic, the inner circle of the image-finding graphic, the common foreground part, the background part, and the independent point part. The position of each part is shown in Figure 1. Each part is filled with a picture, and all the square rectangles in the generated picture are changed to rounded rectangles, and the independent points are directly filled with circular pictures. Among them, except for the background part which uses a light-colored picture, all others are filled with a dark-colored picture. The grayscale value of the dark image should be above 150, and the grayscale value of the light image should be below 100, so as to ensure correct binarization during decoding. At the same time, where the light-colored picture and the dark-colored picture touch, the shadow is used to imitate the lighting effect to make the QR code image have a three-dimensional effect.

In the third method, a straight line is extended backward from each right-angle vertex in the ordinary QR code picture, so that the QR code appears on a truncated surface of a three-dimensional figure.

Finally, a small icon is overlaid on the generated QR code image. The small icon must be aligned with the black and white blocks of the QR code. According to the error correction rules of the QR code, it is judged whether the coverage is within the error correction capability. Try decoding again to see if the decoding is successful. If it is unsuccessful, you can try again by changing the mask or other methods. If it is still unsuccessful, you need to reduce the size of the icon or change the position of the icon, and then try again. In addition to enriching and modifying the picture itself, the present invention also proposes a method of overlaying a small icon on the QR code picture, so that it can better reflect the characteristics of a specific individual or enterprise. By judging whether the amount of error is within the error correction capability of the QR code, and trying to decode it, it is ensured that the coverage of the small icon does not affect the recognition of the QR code. When the picture is generated, you can also perform operations such as selecting and tilting the picture to further enrich the display form of the QR code symbol.

Claims (1)

1. A method for generating a QR code by rendering, characterized in that it comprises the following methods: a) Replace each black and white block with a small block picture, there are multiple small block pictures, select as needed; b) Use pictures of different sizes to fill the different parts of the QR code symbol, and change the original square corner rectangle to a round corner rectangle, and fill the independent black and white blocks with circular pictures; c) presenting the QR code using a three-dimensional graphic; The method of replacing each black and white block with a small block picture in a) is: the result of the QR code encoding module is a two-dimensional matrix, and each element of this matrix is reflected as a black and white block on the final picture, which is replaced by a small picture For this black square, replace the black square with a dark image, and replace the white square with a light background image; In b), the QR code is divided into five parts, which are respectively: the outer circle of the image-finding graphic, the inner circle of the image-finding graphic, the common foreground part, the background part, and the independent point part; each part is filled with a picture, and at the same time All square-corner rectangles in the generated image are changed to round-corner rectangles, and the independent points are directly filled with circular pictures; among them, except for the background part, which uses light-colored pictures, all others are filled with dark-colored pictures; at the same time, shadows are used to make the QR code image There is a sense of three-dimensionality; c) In the ordinary QR code picture, each right-angle vertex extends a straight line backward, so that the QR code is presented at one end of a three-dimensional figure; Overlay a small picture on the generated QR code picture. The small picture must be aligned with the black and white blocks of the QR code. According to the error correction rules of the QR code, judge whether the overlay is within the error correction capability; try decoding again to see if it can The decoding is successful. If it is unsuccessful, you can try again by changing the mask method. If it is still unsuccessful, you need to reduce the size of the picture or change the position of the picture.