2 citations · 2 across the 6 of their papers we have counts for
7 papers
Shift, Scale and Rotation Invariant Multiple Object Detection using Balanced Joint Transform Correlator
Xi Shen, Julian Gamboa, Tabassom Hamidfar +2
The Polar Mellin Transform (PMT) is a well-known technique that converts images into shift, scale and rotation invariant signatures for object detection using opto-electronic corre…
Automatic Event Recognition Employing Optically Excited Electro-Nuclear Spin Coherence
Shamima Mitu, Xi Shen, Julian Gamboa +2
An analog automatic event recognition (AER) system can be realized by combining the technique of holographic image recognition with the process of temporal signal correlation emplo…
Debiased Opto-electronic Joint Transform Correlator for Enhanced Real-Time Pattern Recognition
Julian Gamboa, Xi Shen, Tabassom Hamidfar +2
Opto-electronic joint transform correlators (OJTCs) use a focal plane array (FPA) to detect the joint power spectrum (JPS) of two input images, projecting it onto a spatial light m…
Temporal Scale and Shift Invariant Automatic Event Recognition using the Mellin Transform
Xi Shen, Julian Gamboa, Tabassom Hamidfar +2
The Spatio-temporal holographic correlator combines the traditional 2D optical image correlation techniques with inhomogeneously broadened arrays of cold atoms to achieve 3D time-s…
Ultra-fast Real-time Target Recognition Using a Shift, Scale, and Rotation Invariant Hybrid Opto-electronic Joint Transform Correlator
Xi Shen, Julian Gamboa, Tabassom Hamidfar +2
Hybrid Opto-electronic correlators (HOC) overcome many limitations of all-optical correlators (AOC) while maintaining high-speed operation. However, neither the OEC nor the AOC in…
High-speed Opto-electronic Pre-processing of Polar Mellin Transform for Shift, Scale and Rotation Invariant Image Recognition at Record-Breaking Speeds
Julian Gamboa, Xi Shen, Tabassom Hamidfar +1
Space situational awareness demands efficient monitoring of terrestrial sites and celestial bodies, necessitating advanced target recognition systems. Current target recognition sy…
Ultrafast Image Retrieval from a Holographic Memory Disc for High-Speed Operation of a Shift, Scale, and Rotation Invariant Target Recognition System
Julian Gamboa, Xi Shen, Tabassom Hamidfar +1
The hybrid opto-electronic correlator (HOC) architecture has been shown to be able to detect matches in a shift, scale, and rotation invariant (SSRI) manner by incorporating a pola…