Two-dimension code positioning method in low signal-to-noise ratio environment
A low signal-to-noise ratio, positioning method technology, applied in the field of two-dimensional code processing, can solve problems such as positioning failure and noise information, and achieve the effect of improving purity and strong anti-noise ability
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[0038] Such as figure 1 As shown, a two-dimensional code positioning method in a low signal-to-noise ratio environment includes the following steps:
[0039] S1: Use a handheld device to take a color image of the target, and convert the original color image into a pseudo-grayscale image;
[0040] S2: Use the homomorphic filtering method to enhance the brightness of the grayscale image;
[0041] S3: Use the small line transformation to extract the line from the grayscale image to obtain the edge information map of the target;
[0042] S4: Perform projection positioning on the extracted edge information to obtain the coordinates of the area where the target is located, and intercept the area with the same coordinates on the grayscale image to obtain the image of the target;
[0043] S5: Use the Otsu method to binarize the target image obtained in the previous step, and output the positioning effect.
[0044] The process of step S1 is as follows:
[0045] The image collected ...
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