Apply this action tag to a field of type Text Box (no validation) or File Upload only, and specifiy the name of the source field (which needs to be on the same form). The value of source_field will be ...
Abstract: As a type of two-dimensional barcode widely used in various scenarios, a QR code is an image composed of square black and white modules arranged in a specific way to record information. This ...
Abstract: A novel data hiding method for covert communication via the QR code image based on adjustments of the shapes of the QR code modules using image processing techniques is proposed. A module ...
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