Optimum synthesis of a bipolar composite reference function with a simulated annealing algorithm

Lü, Mingzhe; Yin, Shizhuo; Chen, Chulung; Yu, Francis T. S.; Hudson, Tracy D.; McMillen, Deanna K.

doi:10.1117/1.600836

Cited by 10 publications

(2 citation statements)

References 12 publications

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“…The attached CeO 2 and its contents in f ‐OFA‐CeO 2 made the difference. It has been reported 20,21 that CeO 2 can act as a good UV absorber, showing a wide strong peak from 280–400 nm in polymers; this property was not altered when using f ‐OFA‐CeO 2 in the WBPU coating. Because the WBPU/ f ‐OFA‐CeO 2 coating showed good absorption in the UV light region, this material was expected to be used as a UV‐shielding coating to improve the UV degradation resistance under sunlight exposure.…”

Section: Resultsmentioning

confidence: 90%

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO₂ protective coating

Rahman

Zahir

Arafat

et al. 2020

J of Applied Polymer Sci

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A waste material called oil fly ash (OFA) was acid-functionalized, yielding f-OFA-COOH, which was then reacted with cerium oxide (CeO 2) to make CeO 2functionalized OFA, or f-OFA-CeO 2. Pristine OFA and f-OFA-CeO 2 were used to make waterborne polyurethane (WBPU) dispersions, referred to as WBPU/ OFA and WBPU/f-OFA-CeO 2 , respectively, with defined OFA and f-OFA-CeO 2 content. All the dispersions were applied to mild steel as organic coatings to evaluate their protective properties, such as their hydrophobicity, adhesive strength and UV-shielding resistance. These protective properties varied based on the OFA and f-OFA-CeO 2 content. The highest water contact angle, minimum water swelling and maximum adhesive strength were found using WBPU/ f-OFA-CeO 2-20 coating (using 2.00 wt% f-OFA-CeO 2), which also showed the maximum ultraviolet (UV) absorption via UV-vis spectroscopy analysis. This UV shielding result also matched field test results, as that coating was found to exhibit the lowest UV degradation near a marine atmosphere, as shown by Xray photoelectron spectroscopy (XPS) analysis. The least affected hydrophobicity was also recorded for the sample with the WBPU/f-OFA-CeO 2-20 coating.

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Section: Resultsmentioning

confidence: 90%

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO₂ protective coating

Rahman

Zahir

Arafat

et al. 2020

J of Applied Polymer Sci

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“…In contrast to the simple matched filter, which is matched to a single training image, a composite filter allows the use of a set of training images and is capable of recognizing a target with tolerance to noise and a variety of distortions. The simulated annealing algorithm is a technique of synthesizing matched filters capable of discriminating almost similar patterns [140,141]. This algorithm has been used to synthesize bipolar matched filters that provide rotation invariance for CCD and thermally captured images [142].…”

Section: Improved Hybrid Systems and Architectures For Optical-digita...mentioning

confidence: 99%

Advanced optical correlation and digital methods for pattern matching—50th anniversary of Vander Lugt matched filter

Millán¹

2012

J. Opt.

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On the verge of the 50th anniversary of Vander Lugt's formulation for pattern matching based on matched filtering and optical correlation, we acknowledge the very intense research activity developed in the field of correlation-based pattern recognition during this period of time. The paper reviews some domains that appeared as emerging fields in the last years of the 20th century and have been developed later on in the 21st century. Such is the case of three-dimensional (3D) object recognition, biometric pattern matching, optical security and hybrid optical-digital processors. 3D object recognition is a challenging case of multidimensional image recognition because of its implications in the recognition of real-world objects independent of their perspective. Biometric recognition is essentially pattern recognition for which the personal identification is based on the authentication of a specific physiological characteristic possessed by the subject (e.g. fingerprint, face, iris, retina, and multifactor combinations). Biometric recognition often appears combined with encryption-decryption processes to secure information. The optical implementations of correlation-based pattern recognition processes still rely on the 4f-correlator, the joint transform correlator, or some of their variants. But the many applications developed in the field have been pushing the systems for a continuous improvement of their architectures and algorithms, thus leading towards merged optical-digital solutions.

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A Mach–Zehnder joint transform correlator with the simulated annealing algorithm for pattern recognition

Chen

2011

Optics Communications

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Optimum synthesis of a bipolar composite reference function with a simulated annealing algorithm

Cited by 10 publications

References 12 publications

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO₂ protective coating

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO₂ protective coating

Advanced optical correlation and digital methods for pattern matching—50th anniversary of Vander Lugt matched filter

A Mach–Zehnder joint transform correlator with the simulated annealing algorithm for pattern recognition

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Optimum synthesis of a bipolar composite reference function with a simulated annealing algorithm

Cited by 10 publications

References 12 publications

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO2 protective coating

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO2 protective coating

Advanced optical correlation and digital methods for pattern matching—50th anniversary of Vander Lugt matched filter

A Mach–Zehnder joint transform correlator with the simulated annealing algorithm for pattern recognition

Contact Info

Product

Resources

About

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO₂ protective coating

UV‐shielding by a polyurethane/f‐Oil fly ash‐CeO₂ protective coating