Capítols de llibrehttp://hdl.handle.net/2117/33982024-03-28T17:56:24Z2024-03-28T17:56:24ZModeling the use of LiDAR through adverse weatherBallesta Garcia, MariaMas Giménez, Gerard deRoyo Royo, Santiagohttp://hdl.handle.net/2117/4015612024-02-09T09:00:22Z2024-02-09T08:55:02ZModeling the use of LiDAR through adverse weather
Ballesta Garcia, Maria; Mas Giménez, Gerard de; Royo Royo, Santiago
Due to the outstanding characteristics of LiDAR imaging systems, they seem essential for the consolidation of novel applications related to computer vision, in fields such as autonomous vehicles, outdoor recognition, and surveillance. However, the final technology implementation still has some uncertainties and needs in-depth work for its use in these real-world applications. Under the presence of adverse weather conditions, for example in fog, LiDAR performance is heavily influenced and the quality of the detection becomes severely degraded. The range is reduced due to the dispersion of the media and the sensor could be saturated due to backscattering or deliver a very limited range. Light propagation modeling through turbid media is used as a tool to understand and study these phenomena. Mie Theory allows the characterization of the optical media and light-particle interactions. Monte-Carlo methods are used to solve the radiative transfer problem related to these situations. When working with those models, the results obtained are in accordance with the ones shown in experimental tests, and it is possible to predict the necessities and problems of the designed systems.
2024-02-09T08:55:02ZBallesta Garcia, MariaMas Giménez, Gerard deRoyo Royo, SantiagoDue to the outstanding characteristics of LiDAR imaging systems, they seem essential for the consolidation of novel applications related to computer vision, in fields such as autonomous vehicles, outdoor recognition, and surveillance. However, the final technology implementation still has some uncertainties and needs in-depth work for its use in these real-world applications. Under the presence of adverse weather conditions, for example in fog, LiDAR performance is heavily influenced and the quality of the detection becomes severely degraded. The range is reduced due to the dispersion of the media and the sensor could be saturated due to backscattering or deliver a very limited range. Light propagation modeling through turbid media is used as a tool to understand and study these phenomena. Mie Theory allows the characterization of the optical media and light-particle interactions. Monte-Carlo methods are used to solve the radiative transfer problem related to these situations. When working with those models, the results obtained are in accordance with the ones shown in experimental tests, and it is possible to predict the necessities and problems of the designed systems.Capítulo 4: clima, movilidad y energíaRoyo Royo, Santiagohttp://hdl.handle.net/2117/3847432023-03-08T14:10:12Z2023-03-08T14:06:40ZCapítulo 4: clima, movilidad y energía
Royo Royo, Santiago
La Agenda Estratégica de Innovación es una de las herramientas clave de que dispone la comunidad relacionada con la Fotónica de dar a conocer sus necesidades y actividades. Indica cuáles son las prioridades que la industria de la Fotónica en España considera relevantes para su futuro, e indica los principales vectores de desarrollo en los próximos años. Permite, sobre todo, generar un mapa de capacidades y necesidades en la I+D+i de nuestro país a través de un proceso transversal y abierto al que está invitada toda la Comunidad. En esta anualidad, se ha invitado explícitamente a las más de 200 empresas y centros de investigación de diferentes tamaños que componen la plataforma a participar en el proceso de debate, y de manera abierta a la Sociedad a través de nuestras redes sociales.
2023-03-08T14:06:40ZRoyo Royo, SantiagoLa Agenda Estratégica de Innovación es una de las herramientas clave de que dispone la comunidad relacionada con la Fotónica de dar a conocer sus necesidades y actividades. Indica cuáles son las prioridades que la industria de la Fotónica en España considera relevantes para su futuro, e indica los principales vectores de desarrollo en los próximos años. Permite, sobre todo, generar un mapa de capacidades y necesidades en la I+D+i de nuestro país a través de un proceso transversal y abierto al que está invitada toda la Comunidad. En esta anualidad, se ha invitado explícitamente a las más de 200 empresas y centros de investigación de diferentes tamaños que componen la plataforma a participar en el proceso de debate, y de manera abierta a la Sociedad a través de nuestras redes sociales.Visible and extended near-infrared multispectral imaging for skin cancer diagnosisRey Barroso, LauraBurgos Fernández, Francisco JavierDelpueyo, XanaAres Rodríguez, MiguelRoyo Royo, SantiagoMalvehy Guilera, JosepPuig, SusanaVilaseca Ricart, Meritxellhttp://hdl.handle.net/2117/3459782022-05-17T10:14:46Z2021-05-21T10:03:43ZVisible and extended near-infrared multispectral imaging for skin cancer diagnosis
Rey Barroso, Laura; Burgos Fernández, Francisco Javier; Delpueyo, Xana; Ares Rodríguez, Miguel; Royo Royo, Santiago; Malvehy Guilera, Josep; Puig, Susana; Vilaseca Ricart, Meritxell
With the goal of diagnosing skin cancer in an early and noninvasive way, an extended near infrared multispectral imaging system based on an InGaAs sensor with sensitivity from 995 nm to 1613 nm was built to evaluate deeper skin layers thanks to the higher penetration of photons at these wavelengths. The outcomes of this device were combined with those of a previously developed multispectral system that works in the visible and near infrared range (414 nm–995 nm). Both provide spectral and spatial information from skin lesions. A classification method to discriminate between melanomas and nevi was developed based on the analysis of first-order statistics descriptors, principal component analysis, and support vector machine tools. The system provided a sensitivity of 78.6% and a specificity of 84.6%, the latter one being improved with respect to that offered by silicon sensors.
2021-05-21T10:03:43ZRey Barroso, LauraBurgos Fernández, Francisco JavierDelpueyo, XanaAres Rodríguez, MiguelRoyo Royo, SantiagoMalvehy Guilera, JosepPuig, SusanaVilaseca Ricart, MeritxellWith the goal of diagnosing skin cancer in an early and noninvasive way, an extended near infrared multispectral imaging system based on an InGaAs sensor with sensitivity from 995 nm to 1613 nm was built to evaluate deeper skin layers thanks to the higher penetration of photons at these wavelengths. The outcomes of this device were combined with those of a previously developed multispectral system that works in the visible and near infrared range (414 nm–995 nm). Both provide spectral and spatial information from skin lesions. A classification method to discriminate between melanomas and nevi was developed based on the analysis of first-order statistics descriptors, principal component analysis, and support vector machine tools. The system provided a sensitivity of 78.6% and a specificity of 84.6%, the latter one being improved with respect to that offered by silicon sensors.Emprendre des de les Universitats a Catalunya: models, estereotips i amenacesRoyo Royo, Santiagohttp://hdl.handle.net/2117/1296332020-07-23T21:39:43Z2019-02-25T13:22:26ZEmprendre des de les Universitats a Catalunya: models, estereotips i amenaces
Royo Royo, Santiago
La present comunicació persegueix discutir les possibilitats i problemes dels models d’emprenedoria des de les universitats. Les universitats catalanes són actors molt significatius de la generació de coneixement al país. Malgrat això, el percentatge d’aquest coneixement que acaba convertit en valor al territori és encara massa modest. L’anàlisi d’aquesta situació permet albirar temes diversos, però que en general poden identificar-se a partir d’una combinació d’aspectes culturals, de gestió de personal, i de model de suport la emprenedoria de les organitzacions. Es plantejaran alguns dels estereotips més importants des del punt de vista de la societat i de la Universitat, i es discutiran alguns dels models d’èxit que estan permetent impulsar el pas al mercat d’aquest coneixement, a partir de l’anàlisi i discussió d’un model d’èxit. El CD6 de la UPC és un centre amb un model propi de gestió i generació del coneixement que orient a la seva activitat de recerca a partir de col.laboracions i projectes amb empreses del país (en aquest cas particular, vinculats a l’enginyeria òptica i la fotònica) el que li ha permès generar fins a 11 empreses spin-off i obtenir un retorn significatiu al se pressupost en forma de royalties. S’analitzarà la importància dels aspectes que permeten impulsar aquests models i el principals entrebancs i amenaces actuals per la pervivència i extensió de models d’emprenedoria sostenible dins les universitats catalanes.
2019-02-25T13:22:26ZRoyo Royo, SantiagoLa present comunicació persegueix discutir les possibilitats i problemes dels models d’emprenedoria des de les universitats. Les universitats catalanes són actors molt significatius de la generació de coneixement al país. Malgrat això, el percentatge d’aquest coneixement que acaba convertit en valor al territori és encara massa modest. L’anàlisi d’aquesta situació permet albirar temes diversos, però que en general poden identificar-se a partir d’una combinació d’aspectes culturals, de gestió de personal, i de model de suport la emprenedoria de les organitzacions. Es plantejaran alguns dels estereotips més importants des del punt de vista de la societat i de la Universitat, i es discutiran alguns dels models d’èxit que estan permetent impulsar el pas al mercat d’aquest coneixement, a partir de l’anàlisi i discussió d’un model d’èxit. El CD6 de la UPC és un centre amb un model propi de gestió i generació del coneixement que orient a la seva activitat de recerca a partir de col.laboracions i projectes amb empreses del país (en aquest cas particular, vinculats a l’enginyeria òptica i la fotònica) el que li ha permès generar fins a 11 empreses spin-off i obtenir un retorn significatiu al se pressupost en forma de royalties. S’analitzarà la importància dels aspectes que permeten impulsar aquests models i el principals entrebancs i amenaces actuals per la pervivència i extensió de models d’emprenedoria sostenible dins les universitats catalanes.3D Depth SensingPavlidis, GeorgeRoyo Royo, Santiagohttp://hdl.handle.net/2117/1149992020-07-23T21:57:18Z2018-03-09T11:58:55Z3D Depth Sensing
Pavlidis, George; Royo Royo, Santiago
2018-03-09T11:58:55ZPavlidis, GeorgeRoyo Royo, SantiagoStructured light 3D scanningRieke-Zapp, DirkRoyo Royo, Santiagohttp://hdl.handle.net/2117/1149902020-07-23T20:05:06Z2018-03-09T11:35:09ZStructured light 3D scanning
Rieke-Zapp, Dirk; Royo Royo, Santiago
2018-03-09T11:35:09ZRieke-Zapp, DirkRoyo Royo, SantiagoSpectral signatures : a way to identify species and conditions of vegetablesSandoval, JoséGor, SergioRamallo, JacquelineSfer, AnaColombo, ElisaVilaseca Ricart, MeritxellPujol Ramo, Jaumehttp://hdl.handle.net/2117/159962020-07-23T22:42:17Z2012-06-09T10:47:59ZSpectral signatures : a way to identify species and conditions of vegetables
Sandoval, José; Gor, Sergio; Ramallo, Jacqueline; Sfer, Ana; Colombo, Elisa; Vilaseca Ricart, Meritxell; Pujol Ramo, Jaume
Confirming the statement from Shlens (2009), that is, that the goal of PCA is to identify the most meaningful basis to reexpress a dataset, the results obtained in this work show that the careful selection and suitable preparation of samples together with the precise collection of spectral signature data and the application of an adequate statistical analysis like PCA conform a powerful and reliable technique to recognize and classify plants, allowing us to identify the origin of a given vegetable sample. That technique could be considerably improved by developing a database of standardized spectral signatures of the main crops in each stage and status. This could be the basis for higher level of plant and crop analysis, allowing us the prediction, diagnosis, and solution of different health and phenologic affections of plants.
2012-06-09T10:47:59ZSandoval, JoséGor, SergioRamallo, JacquelineSfer, AnaColombo, ElisaVilaseca Ricart, MeritxellPujol Ramo, JaumeConfirming the statement from Shlens (2009), that is, that the goal of PCA is to identify the most meaningful basis to reexpress a dataset, the results obtained in this work show that the careful selection and suitable preparation of samples together with the precise collection of spectral signature data and the application of an adequate statistical analysis like PCA conform a powerful and reliable technique to recognize and classify plants, allowing us to identify the origin of a given vegetable sample. That technique could be considerably improved by developing a database of standardized spectral signatures of the main crops in each stage and status. This could be the basis for higher level of plant and crop analysis, allowing us the prediction, diagnosis, and solution of different health and phenologic affections of plants.Optics of astigmatism and retinal image qualityVilaseca Ricart, MeritxellDíaz-Doutón, FernandoLuque, Sergio OscarAldaba Arévalo, MikelArjona Carbonell, Mª MontserratPujol Ramo, Jaumehttp://hdl.handle.net/2117/157482021-05-20T07:19:07Z2012-04-19T12:02:39ZOptics of astigmatism and retinal image quality
Vilaseca Ricart, Meritxell; Díaz-Doutón, Fernando; Luque, Sergio Oscar; Aldaba Arévalo, Mikel; Arjona Carbonell, Mª Montserrat; Pujol Ramo, Jaume
In the first part of this chapter, the optical condition of astigmatism is defined. The main causes and available classifications of ocular astigmatism are briefly described. The most relevant optical properties of image formation in an astigmatic eye are analysed and compared to that of an emmetropic eye and an eye with spherical ametropia. The spectacle prescription and axis notation for astigmatism are introduced, and the correction of astigmatism by means of lenses is briefly described.
The formation of the retinal image for extended objects and the related blurring are also analysed, and the real limits of tolerance of uncorrected astigmatism are provided. Simulations of retinal images in astigmatic eyes, obtained by means of commercial optical design software, are also presented.
Finally, the clinical assessment of retinal image quality by means of wavefront aberrometry and double-pass systems in eyes with astigmatism is presented, and current trends in research related to this topic are highlighted.
2012-04-19T12:02:39ZVilaseca Ricart, MeritxellDíaz-Doutón, FernandoLuque, Sergio OscarAldaba Arévalo, MikelArjona Carbonell, Mª MontserratPujol Ramo, JaumeIn the first part of this chapter, the optical condition of astigmatism is defined. The main causes and available classifications of ocular astigmatism are briefly described. The most relevant optical properties of image formation in an astigmatic eye are analysed and compared to that of an emmetropic eye and an eye with spherical ametropia. The spectacle prescription and axis notation for astigmatism are introduced, and the correction of astigmatism by means of lenses is briefly described.
The formation of the retinal image for extended objects and the related blurring are also analysed, and the real limits of tolerance of uncorrected astigmatism are provided. Simulations of retinal images in astigmatic eyes, obtained by means of commercial optical design software, are also presented.
Finally, the clinical assessment of retinal image quality by means of wavefront aberrometry and double-pass systems in eyes with astigmatism is presented, and current trends in research related to this topic are highlighted.Camera-based colour measurementVilaseca Ricart, MeritxellPujol Ramo, JaumeMartínez Verdú, Francisco MiguelChorro, ElisabethPerales, Estherhttp://hdl.handle.net/2117/125612020-07-23T21:56:29Z2011-05-13T10:09:32ZCamera-based colour measurement
Vilaseca Ricart, Meritxell; Pujol Ramo, Jaume; Martínez Verdú, Francisco Miguel; Chorro, Elisabeth; Perales, Esther
2011-05-13T10:09:32ZVilaseca Ricart, MeritxellPujol Ramo, JaumeMartínez Verdú, Francisco MiguelChorro, ElisabethPerales, Esther