Reading watermarks with a camera phone from printed images

A Pramila - 2018 - oulurepo.oulu.fi
… ) Toward an interactive poster using digital watermarkingdigital image watermarking in the
context of camera phones … In digital image watermarking, data is embedded in the image in …

Image-based data interfaces revisited: Barcodes and watermarks for the mobile and digital worlds

G Sharma - 2016 8th International Conference on …, 2016 - ieeexplore.ieee.org
image watermarks can also be visual patterns, we use the … Smart phone cameras are primarily
designed for capturing … website by using a barcode on an advertisement or poster, which …

Extracting watermarks from printouts captured with wide angles using computational photography

A Pramila, A Keskinarkaus, V Takala… - Multimedia Tools and …, 2017 - Springer
Digital image watermarking is the process of embedding … with a digital camera in order to
simulate camera phone use cases … have capabilities to direct the autofocus towards different …

[HTML][HTML] Joint image encryption and screen-cam robust two watermarking scheme

W Chen, N Ren, C Zhu, A Keskinarkaus, T Seppänen… - Sensors, 2021 - mdpi.com
… transmission process containing digital-to-analog and analog-to-digital conversion. Similar
… -cam process. Existing research on print-scan or print-cam robust image watermarking can …

[HTML][HTML] Screen-Cam robust image watermarking with feature-based synchronization

W Chen, N Ren, C Zhu, Q Zhou, T Seppänen… - Applied Sciences, 2020 - mdpi.com
image information is leaked. However, traditional image watermarking methods are not
resilient to screen-cam … In this paper, a screen-cam robust watermarking scheme with a feature-…

[PDF][PDF] Media Watermarking, Security, and Forensics 201

G Sharma - 2019 - library.imaging.org
… in the areas of digital watermarking, steganography, data … progress made recently toward
the development of head-… optical pathways to both digital and physical worlds without …

Increasing the capturing angle in print-cam robust watermarking

A Pramila, A Keskinarkaus, T Seppänen - Journal of Systems and Software, 2018 - Elsevier
… -cam robust image watermarking, mobile phone applications … user has aimed the watermarked
image towards the centre of … The print containing the watermarked image, like in a poster, …

Watermark extraction under print-cam process using wave atoms based blind digital watermarking

F Ahmad, LM Cheng - … 2nd International Conference on Vision, Image …, 2018 - dl.acm.org
… domain for embedding the watermark. We employ WAT … watermark using a mobile phone
camera. Distortions caused during print-cam process are mainly attributed to digital cameras, …

A zero-bit Fourier image watermarking for print-cam process

K Gourrame, H Douzi, R Harba, R Riad, F Ros… - Multimedia Tools and …, 2019 - Springer
… In this paper, we have presented a zero-bit image watermarking based on Fourier transform
for print-cam attacks that can be implemented on a smartphone. The method contains a pre-…

Digital watermarking for camera-captured images based on just noticeable distortion and Wiener filtering

K Thongkor, T Amornraksa, EJ Delp - … of Visual Communication and Image …, 2018 - Elsevier
… In 2012, a periodic pattern-based watermarking method for interactive posters was … has a
rather flat and tilted scene, ie straight lines remain straight, but parallel lines converge toward