Visual code system for camera-equipped mobile devices and applications thereof
A mobile device, digital camera technology, applied in the field of special visual code
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[0033] A detailed description of the preferred embodiment (and some alternative embodiments) of the invention is given below. It should be apparent, however, to those skilled in the art that changes in form and content of the described embodiments may be made to optimize various situations.
[0034] Referring first to FIG. 1, there is shown an example of a visual code 101 useful in the present invention. The visual code 101 consists of a large guide bar 103 and a small guide bar 105 for determining the position and orientation of the visual code 101, and three cornerstones 107, 109 and 111 for detecting distortion, and a data area with the actual code bits . The shown version of the visual code 101 has a capacity of 83 bits, but its design is generic and suitable for scaling to large bit numbers. The visual code 101 can be reliably localized even in small, oblique, low-quality images.
[0035] Visual code 101 may be printed using standard inks or infrared inks. If the visu...
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Abstract
Description
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