4 papers
NOWA: Null-space Optical Watermark for Invisible Capture Fingerprinting and Tamper Localization
Edwin Vargas, Jhon Lopez, Henry Arguello +1
Ensuring the authenticity and ownership of digital images is increasingly challenging as modern editing tools enable highly realistic forgeries. Existing image protection systems m…
Hypercomplex Phase Retrieval
Kumar Vijay Mishra, Henry Arguello, Brian M. Sadler
Hypercomplex signal processing (HSP) offers powerful tools for analyzing and processing multidimensional signals by explicitly exploiting inter-dimensional correlations through Cli…
Structure-Preserving Medical Image Generation from a Latent Graph Representation
Kevin Arias, Edwin Vargas, Kumar Vijay Mishra +2
Supervised learning techniques have proven their efficacy in many applications with abundant data. However, applying these methods to medical imaging is challenging due to the scar…
Single Snapshot Distillation for Phase Coded Mask Design in Phase Retrieval
Karen Fonseca, Leon Suarez-Rodriguez, Andres Jerez +2
Phase retrieval (PR) reconstructs phase information from magnitude measurements, known as coded diffraction patterns (CDPs), whose quality depends on the number of snapshots captur…