Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Peter Wai Ming Tsang"'
Publikováno v:
Photonics, Vol 11, Iss 9, p 878 (2024)
This paper proposes an asymmetric scanning holography cryptosystem based on the Elgamal algorithm. The method encodes images with sine and cosine holograms. Subsequently, each hologram is divided into a signed bit matrix and an unsigned hologram matr
Externí odkaz:
https://doaj.org/article/97355d3a7d5244b48341f73d34fd723f
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract We propose an asymmetric cryptosystem based on optical scanning cryptography (OSC) and elliptic curve cryptography (ECC) algorithm. In the encryption stage of OSC, an object is encrypted to cosine and sine holograms by two pupil functions ca
Externí odkaz:
https://doaj.org/article/d573c3acdd594184a8d27dcdad4c2bc5
Autor:
Peter Wai Ming Tsang
Publikováno v:
ICT Express, Vol 1, Iss 1, Pp 26-29 (2015)
The emergence of high resolution printer and digital micromirror device (DMD) has enabled real, off-axis holograms to be printed, or projected onto a screen. As most printers and DMD can only reproduce binary dots, the pixels in a hologram have to be
Externí odkaz:
https://doaj.org/article/1b174c1a0fd743b7b9e5c605c8fcb977
Publikováno v:
Applied Sciences, Vol 8, Iss 5, p 830 (2018)
Optical scanning holography (OSH) is a powerful and effective method for capturing the complex hologram of a three-dimensional (3-D) scene. Such captured complex hologram is called optical scanned hologram. However, reconstructing a focused image fro
Externí odkaz:
https://doaj.org/article/de58af1016734d73a9969f07b78b9b22
Publikováno v:
IEEE Transactions on Industrial Informatics. 16:1094-1101
In this article, we report an optical scanning holography (OSH) system that is equipped with biometric and the asymmetrical Rivest–Shamir–Adleman (RSA) encryption. Past research works have demonstrated that either encryption alone is vulnerable t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e750c6dab139f46f9fcd00c6fbc885a
https://doi.org/10.1109/tii.2019.2903264
https://doi.org/10.1109/tii.2019.2903264
Publikováno v:
Optics express. 29(16)
A sampled phase-only hologram (SPOH) is the phase component of the hologram of an object image with pixels being sampled with a periodic grid-cross pattern. The reconstructed image of a SPOH is a sparse image with abundant empty voids and degradation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93834be596c555f76c04d0bdf3c7325c
https://pubmed.ncbi.nlm.nih.gov/34614879
https://pubmed.ncbi.nlm.nih.gov/34614879
Publikováno v:
Optics and Lasers in Engineering. 158:107161
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3420933aed43f739971a434c649a68e0
https://doi.org/10.1016/j.optlaseng.2022.107161
https://doi.org/10.1016/j.optlaseng.2022.107161
Autor:
Ting-Chung Poon, Peter Wai Ming Tsang, Wenjing Zhou, Zhijuan Hu, Hongbo Zhang, Deng Cao, Lin Wang, Yaping Zhang
Publikováno v:
Applied Sciences, Vol 11, Iss 4500, p 4500 (2021)
Applied Sciences
Volume 11
Issue 10
Applied Sciences
Volume 11
Issue 10
In this research, the accuracy of image classification with Fourier Ptychography Microscopy (FPM) has been systematically investigated. Multiple linear regression shows a strong linear relationship between the results of image classification accuracy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e44721c311a1dc99ebd25fea70f4868d
https://www.mdpi.com/2076-3417/11/10/4500
https://www.mdpi.com/2076-3417/11/10/4500
Publikováno v:
Applied optics. 60(10)
This feature issue of Applied Optics is dedicated to the international meeting of Information Photonics 2020 (IP’20), which was held September 11–12, 2020, in Taipei, Taiwan. IP’20 covered a broad range of topics, including advanced display tec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbc0409f6ba4ff6fc14e414117a085f7
https://pubmed.ncbi.nlm.nih.gov/33798160
https://pubmed.ncbi.nlm.nih.gov/33798160
