Optical correlator based on the Hilbert transform for image recognition

Drăgulinescu, Andrei; Drăgulinescu, Ana–Maria; Marcu, Ioana

doi:10.1109/ecai52376.2021.9515064

Cited by 3 publications

(1 citation statement)

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“…Thus, additional data can be gathered about the input image, with the use of the directional Hilbert transform to select the contours of the image in a specified direction. In one of my recent papers [ 112 ], I studied the implementation of the Hilbert transform in an optical correlator and its advantages. Based on the classical Hilbert correlator principle, I assessed the performance of an optical correlator, either JTC or VLC, based on the Hilbert transform in applications designed for image recognition.…”

Section: Recent Applications and Implementations Of Optical Correlatorsmentioning

confidence: 99%

Optical Correlators for Cryptosystems and Image Recognition: A Review

Drăgulinescu

2023

Sensors

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Optical correlators are efficient optical systems that have gained a wide range of applications both in image recognition and encryption, due to their special properties that benefit from the optoelectronic setup instead of an all-electronic one. This paper presents, to the best of our knowledge, the most extensive review of optical correlators to date. The main types are overviewed, together with their most frequent applications in the newest contributions, ranging from security uses in cryptosystems, to medical and space applications, femtosecond pulse detection and various other image recognition proposals. The paper also includes a comparison between various optical correlators developed recently, highlighting their advantages and weaknesses, to gain a better perspective towards finding the best solutions in any specific domain where these devices might prove highly efficient and useful.

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Section: Recent Applications and Implementations Of Optical Correlatorsmentioning

confidence: 99%