Search Results for author: Andrei Cozma

Found 4 papers, 1 papers with code

Defect Detection in Tire X-Ray Images: Conventional Methods Meet Deep Structures

no code implementations28 Feb 2024 Andrei Cozma, Landon Harris, Hairong Qi, Ping Ji, Wenpeng Guo, Song Yuan

This paper introduces a robust approach for automated defect detection in tire X-ray images by harnessing traditional feature extraction methods such as Local Binary Pattern (LBP) and Gray Level Co-Occurrence Matrix (GLCM) features, as well as Fourier and Wavelet-based features, complemented by advanced machine learning techniques.

Defect Detection Feature Engineering

Cross-Scale MAE: A Tale of Multi-Scale Exploitation in Remote Sensing

1 code implementation29 Jan 2024 Maofeng Tang, Andrei Cozma, Konstantinos Georgiou, Hairong Qi

Remote sensing images present unique challenges to image analysis due to the extensive geographic coverage, hardware limitations, and misaligned multi-scale images.

Representation Learning Self-Supervised Learning

Simulation of conditional expectations under fast mean-reverting stochastic volatility models

no code implementations17 Dec 2020 Andrei Cozma, Christoph Reisinger

In this short paper, we study the simulation of a large system of stochastic processes subject to a common driving noise and fast mean-reverting stochastic volatilities.

Numerical Analysis Numerical Analysis Computational Finance

Calibration of a Hybrid Local-Stochastic Volatility Stochastic Rates Model with a Control Variate Particle Method

no code implementations21 Jan 2017 Andrei Cozma, Matthieu Mariapragassam, Christoph Reisinger

We propose a novel and generic calibration technique for four-factor foreign-exchange hybrid local-stochastic volatility models with stochastic short rates.

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