Proceedings ArticleDOI
Image-based data interfaces revisited: Barcodes and watermarks for the mobile and digital worlds
Gaurav Sharma
- pp 1-6
TLDR
This paper highlights key attributes that distinguish these image-based communications interfaces from other noncontact modes of communication and make their continued use an attractive option.Abstract:
The ubiquitous availability of image sensors in smartphones and other mobile computing devices makes feasible new applications for both barcodes that encode data as image patterns and watermarks that hide data in images. To support these new applications, a number of new methods have been developed for these long-standing image-based data communication interfaces, methods that are better suited for use with the image sensors. In this paper, we review these developments and the applications they enable, drawing upon examples from our own prior work in this area. We highlight key attributes that distinguish these image-based communications interfaces from other noncontact modes of communication and make their continued use an attractive option.read more
Citations
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Journal ArticleDOI
Current Status and Performance Analysis of Optical Camera Communication Technologies for 5G Networks
TL;DR: This paper investigates optical camera communication technologies, targeting new spectrum, multiple-input-multiple-output diversity, transmission access, and novel architectures with augmented reality user experience for the extended 5G wireless network.
Journal ArticleDOI
Digital forensics of microscopic images for printed source identification
TL;DR: In this paper, microscopic images are used for printed source identification due to their high magnification properties resulting in detailed texture and structure information, and the proposed approach utilizes image processing techniques and data exploration methods to calculate many important statistical features, including: Local Binary Pattern (LBP), Gray Level Co-occurrence Matrix (GLCM), Discrete Wavelet Transform (DWT), Spatial filters, the Wiener filter, the Gabor filter, Haralick, and SFTA features.
Proceedings ArticleDOI
Per-channel color barcodes for displays
Karthik Dinesh,Gaurav Sharma +1 more
TL;DR: A per-channel framework for extending monochrome barcodes to color for display applications, offering increased data rates and capacity and the impact of the interference is small and can be further mitigated through the use of interference cancellation.
Journal ArticleDOI
Dual Modulated QR Codes for Proximal Privacy and Security
TL;DR: This work proposes dual modulated QR (DMQR) codes, a novel QR code extension via which users can securely communicate private information in public places using their smartphones and a camera interface, and demonstrates that the proposed DMQR codes are effective in meeting their objective.
Journal ArticleDOI
Display Image-Barcodes Using Blue/Red Channel Embedding.
Karthik Dinesh,Gaurav Sharma +1 more
TL;DR: This work proposes an image-barcode for display applications that is simple, yet novel, encodes the data into a monochrome barcode and embeds it into a suitably chosen region in the blue/red channel of a displayed image.
References
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Electronic marking and identification techniques to discourage document copying
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Journal ArticleDOI
Electronic marking and identification techniques to discourage document copying
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