Method and device for generating picture verification code
A technology of picture verification code and generating device, which is applied in the field of picture verification code generation, can solve problems such as difficult identification of picture verification codes, and achieve the effect of increasing the difficulty of recognition
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Embodiment 1
[0037] Embodiment 1 of the present application provides a method for generating a picture verification code, such as figure 1 shown, including the following steps:
[0038] First, multiple character pictures are provided. Each character picture may have only one character or multiple characters on it. The characters may be letters, numbers, etc., and the characters may have one or more fonts. The characters can have one or more colors, and at least one character picture in the plurality of character pictures is a nestable character picture, and at least one nesting hole for nesting character pictures is arranged on the nestable character pictures. position, the nesting position is in an area outside the characters where the character picture can be nested;
[0039] Then, embedding part or all of the character pictures into the nesting positions of the nestable character pictures to generate a picture verification code. The step of embedding part or all of the character pictu...
Embodiment 3
[0044] Based on the second embodiment, a recording step is also included for recording the generated picture verification code and the characters (ASCII code values) corresponding to the multiple character pictures that generate the picture verification code.
Embodiment 4
[0046]1. Setting up a basic character database for providing multiple character pictures, storing multiple character pictures in the basic character database, wherein at least one character picture is a nestable character picture, and each character picture has only one character.
[0047] The data corresponding to each character picture includes the corresponding character (ASCII code value), character minimum radius, character center point coordinates; The radius of the circle with the smallest radius among all pixels.
[0048] Such as figure 2 As shown, take the center point O of the character A A1 is the center of the circle, the radius r of the circle that contains all the pixels of character A and has the smallest radius A1 That is, the minimum character radius of the character picture; the coordinates of the center point of the character, that is, the coordinates of the center point of the character on the character picture, such as figure 2 As shown, the center po...
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