Zobrazeno 1 - 10 of 128 pro vyhledávání: '"Ciències de la visió::Òptica física [Àrees temàtiques de la UPC]"'
1
Understandting soft matter through the use of novel biophysical tools
Autor: Trius Béjar, Juan
Pollen detection is an ongoing topic reviewed nowadays. This substance's impact on human healthcare is high, causing diseases, allergies and asthma. The principal limitation is the necessity of post-processing the laboratory. In this project, we prop
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3484::bafd947a690159d5385c8542973a9ccf
https://hdl.handle.net/2117/385653
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2
Skin color correction via convolutional neural networks in 3D fringe projection profilometry
Autor: María Sagrario Millán García-Varela, Lenny A. Romero, Erik Barrios, Jesus D. Pineda Castro, Andrés G. Marrugo
Publikováno v: Proceedings of SPIE-The International Society for Optical Engineering-Vol. 11804 (2021)
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Fringe Projection Profilometry (FPP) with Digital Light Projector technology is one of the most reliable 3D sensing techniques for biomedical applications. However, besides the fringe pattern images,often a color texture image is needed for an accura
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecba6ac7924fcf493a38adf53fa1c12a
https://hdl.handle.net/20.500.12585/12114
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4
Diseño y caracterización de un dispositivo óptico para la evaluación de lentes intraoculares in vitro
Autor: Azor Morón, Juan Antonio|||0000-0002-3093-3755, Mendoza Párraga, Alison Lizbeth, Vega Lerín, Fidel|||0000-0002-8594-0872, Millán Garcia-Varela, M. Sagrario|||0000-0001-6950-2373
Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Se ha realizado el diseño y la caracterización de un dispositivo en banco óptico, que incorpora un nuevo modelo de ojo fisiológico y un sistema de óptica adaptativa controlado por ordenador, para la evaluación in vitro de las lentes intraocular
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::05c22d83881f05a6e7431f9378091854
https://hdl.handle.net/2117/352364
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5
Use of spectral information for red scale pest control
Autor: Abel Zaragoza, Eloi Canals, Albert Virgili, Meritxell Vilaseca, Fernando Díaz-Doutón, Francisco J. Burgos-Fernández, Carlos E. García-Guerra
Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Decreasing the use of pesticides is one of the main goals of current agriculture, which requires fast, precise and continuous assessments of crop pests. Citrus pests cause a lot of damage worldwide and the techniques to evaluate them are mainly based
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67e364f087437cef029239f15acf41f2
https://hdl.handle.net/2117/359114
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6
Geometric model and calibration method for a solid-state LiDAR
Autor: Noel Rodrigo, Josep R. Casas, Pablo García-Gómez, Santiago Royo
Publikováno v: Sensors (Basel, Switzerland)
Sensors, Vol 20, Iss 2898, p 2898 (2020)
Sensors
Volume 20
Issue 10
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
This paper presents a novel calibration method for solid-state LiDAR devices based on a geometrical description of their scanning system, which has variable angular resolution. Determining this distortion across the entire Field-of-View of the system
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a1ecf79af139aa5bd2b3e39b8403bbc
https://hdl.handle.net/2117/190187
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7
Acousto-holographic optical tweezers
Autor: Estela Martín-Badosa, R. Bola, D. Treptow, Mario Montes-Usategui, A. Marzoa
Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Acousto-optic deflectors (AODs) allow the creation of multiple optical traps by time-sharing, that is, by rapidly cycling the laser focus between designated spatial locations. The traps thus formed are not permanent. In this Letter, we successfully d
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ac4937bf669120dbf7033d5f00f20ac
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8
Effect of modifier oxides on spectroscopic and optical properties of Pr3+ doped PbO-Ro2O3-WO3-B2O3 glasses (with Ro2O = Sb2O3, Al2O3, and Bi2O3)
Autor: R.N.A. Prasad, Nutakki Krishna Mohan, Katta Neeraja, Jose I. Rojas, Bathula Venkata Siva
Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Praseodymium (Pr2O3) doped PbO-Ro2O3–WO3–B2O3 glasses were prepared by melt quenching method and their optical absorption and emission spectra were characterized, for three different heavy metal oxides (Ro2O3 = Sb2O3, Al2O3, and Bi2O3). The chara
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf584794d6bd087fbce3cce49c322bf0
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9
Nonlinear image encryption using a fully phase nonzero-order joint transform correlator in the Gyrator domain
Autor: Elisabet Pérez-Cabré, Juan M. Vilardy, María S. Millán
Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
© 2016 Elsevier Ltd. A novel nonlinear image encryption scheme based on a fully phase nonzero-order joint transform correlator architecture (JTC) in the Gyrator domain (GD) is proposed. In this encryption scheme, the two non-overlapping data distrib
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d9b07176799b0fb12d202e7cfd504fe
https://doi.org/10.1016/j.optlaseng.2016.02.013
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10
Image Encryption System Based on a Nonlinear Joint Transform Correlator for the Simultaneous Authentication of Two Users
Autor: María S. Millán, Elisabet Pérez-Cabré, Juan M. Vilardy O.
Publikováno v: Photonics
Volume 6
Issue 4
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
We propose a new encryption system based on a nonlinear joint transform correlator (JTC) using the information of two biometrics (one digital fingerprint for each user) as security keys of the encryption system. In order to perform the decryption and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57852b6bf6f331ec3bcbc6140d927697
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