2 citations · 2 across the 3 of their papers we have counts for
5 papers
Diagonal Artifacts in Samsung Images: PRNU Challenges and Solutions
David Vázquez-Padín, Fernando Pérez-González, Alejandro Martín-Del-Río
We investigate diagonal artifacts present in images captured by several Samsung smartphones and their impact on PRNU-based camera source verification. We first show that certain Ga…
Beyond Spectral Peaks: Interpreting the Cues Behind Synthetic Image Detection
Sara Mandelli, Diego Vila-Portela, David Vázquez-Padín +2
Over the years, the forensics community has proposed several deep learning-based detectors to mitigate the risks of generative AI. Recently, frequency-domain artifacts (particularl…
Always-convex harmonic shears
Rodrigo Hernández, María J. Martín, Fernando Pérez-González +1
We determine completely the analytic functions in the unit disk such that for all (normalized) orientation-preserving harmonic mappings produced b…
Apple's Synthetic Defocus Noise Pattern: Characterization and Forensic Applications
David Vázquez-Padín, Fernando Pérez-González, Pablo Pérez-Miguélez
iPhone portrait-mode images contain a distinctive pattern in out-of-focus regions simulating the bokeh effect, which we term Apple's Synthetic Defocus Noise Pattern (SDNP). If over…
Norm inequalities for weighted Dirichlet spaces with applications to conformal maps
Fernando Pérez-González, Jouni Rättyä, Toni Vesikko
A variety of norm inequalities related to Bergman and Dirichlet spaces induced by radial weights are considered. Some of the results obtained can be considered as generalizations o…