Abstract
Data-bearing halftone images are an attractive high-capacity alternative to barcodes. We show that smartphone close-focus video capture can recover the associated data, and a frequency-domain-based algorithm enables a robust means of detecting the presence as well as determining the location, scale, and orientation of data-bearing designs. Android and iOS mobile implementations achieve this at near video rates. Using these affine transform parameters as a starting point, a method for full perspective correction for precise alignment is also developed. This functionality is fast, accurate, and achieved without the benefit of fiducial marks.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
