El grup desenvolupa línies de recerca relacionades amb el processament de la informació òptica continguda en imatges i d'altres aplicacions de l’òptica visible, amb extensió a les bandes espectrals de l’infraroig pròxim i l’ultravioleta. Abasta la formació investigadora d'estudiants de màster i doctorat. Comprèn temes relacionats amb: la imatge (formació, presentació i anàlisi), la visió, el color i el processat amb làser. Cobreix aplicacions diverses en els camps de la salut visual, la inspecció de teixits tèxtils, la seguretat òptica, la visió artificial, la inspecció automàtica, el tractament i l’anàlisi d’imatges, el reconeixement de formes, la qualitat òptica i visual, les lents intraoculars, la imatge mèdica, el disseny d’instruments, les tècniques de caracterització i mesura, la fotometria, la colorimetria, el color digital, el processat de materials per irradiació làser i temes afins.

The group?s aim is to carry out research related to the applications of visible optics, including near infrared and ultraviolet spectral bands. It deals with images, vision, colour and laser processing. It embraces a variety of applications in the fields of machine vision, automatic inspection, image analysis and processing, pattern recognition,optical and visual qualities, intraocular lenses, instrumentation and measuring techniques, photometry, colour measurement, digital colour, laser processing of materials, laser marking, waveguides, etc.
The aims of the group involve the following three areas:
- Image processing. The acquisition, analysis, display and processing of images. Optical, digital and hybrid operations performed for a given application, such as pattern recognition, feature extraction, image improvement, fault detection, identification, classification, discrimination, codification, characterisation, etc. Systems, devices and illumination environments for image capturing and display. Human vision models applied to

The group?s aim is to carry out research related to the applications of visible optics, including near infrared and ultraviolet spectral bands. It deals with images, vision, colour and laser processing. It embraces a variety of applications in the fields of machine vision, automatic inspection, image analysis and processing, pattern recognition,optical and visual qualities, intraocular lenses, instrumentation and measuring techniques, photometry, colour measurement, digital colour, laser processing of materials, laser marking, waveguides, etc.
The aims of the group involve the following three areas:
- Image processing. The acquisition, analysis, display and processing of images. Optical, digital and hybrid operations performed for a given application, such as pattern recognition, feature extraction, image improvement, fault detection, identification, classification, discrimination, codification, characterisation, etc. Systems, devices and illumination environments for image capturing and display. Human vision models applied to

Enviaments recents

  • Skin color correction via convolutional neural networks in 3D fringe projection profilometry 

    Barrios Montes, Erik Miguel; Pineda, Jesús; Romero Pérez, Lenny Alexandra; Millán Garcia-Varela, M. Sagrario; Marrugo Hernandez, Andrés Guillermo (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2021)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    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 ...
  • Comparison of visual performance between two aspheric monofocal intraocular lens models 

    Poyales, Francisco; Garzon, Nuria; Rico del Viejo Miranza, Laura; Zhou, Ying; Millán Garcia-Varela, M. Sagrario; Vega Lerín, Fidel (Taylor & Francis, 2021-12-07)
    Article
    Accés restringit per política de l'editorial
    Clinical relevance It is important to distinguish between visual acuity, optical quality and quality of vision when outcomes obtained with intraocular lenses are evaluated. These parameters, that includeobjective and ...
  • Pupil size differences between female and male patients after cataract surgery 

    Ordiñaga Monreal, Enrique; Castanera Gratacós, Diego; Castanera de Molina, Fernando; Fambuena Muedra, Isabel; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario (Elsevier, 2021-02)
    Article
    Accés obert
    Purpose To evaluate the changes in pupil diameter in women and men after cataract surgery. The correlation of pupillary changes with the variables age and anterior chamber depth will be analyzed. Methods The values of 109 ...
  • Automated corneal endothelium image segmentation in the presence of cornea guttata via convolutional neural networks - 115110H 

    Sierra Bravo, Juan Sebastián; Pineda, Jesús; Viteri Coronel, Eduardo; Rueda Latorre, Daniela; Tibaduiza Vargas, Beatriz Eugenia; Berrospi, Rubén; Tello, Alejandro; Galvis Ramírez, Virgilio; Volpe, Giovanni; Millán Garcia-Varela, M. Sagrario; Romero Pérez, Lenny Alexandra; Marrugo Hernandez, Andrés Guillermo (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Automated cell counting in in-vivo specular microscopy images is challenging, especially in situations where single-cell segmentation methods fail due to pathological conditions. This work aims to obtain reliable cell ...
  • 20/21 Central Event in Spain of the International Day of Light: outreach and citizen engagement in time of pandemic 

    Pérez Cabré, Elisabet; Millán Garcia-Varela, M. Sagrario; Armengol Cebrian, Jesús (Optica Publishing Group, 2021)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The 3rd central IDL Event in Spain probably gathered the largest number of activities for the 16th May commemoration in 2021. Conferences, debates, workshops, exhibitions, light shows, and photo contests, adapted to severe ...
  • Visual acuity at various distances and defocus curve: a good match 

    Clavé Cerezo, Laura; Torrents Gómez, Aurora; Millán Garcia-Varela, M. Sagrario (2022-02-01)
    Article
    Accés obert
    The defocus curve (DC) has become the gold standard method for assessing the visual performance at different distances, and hence, to evaluate the depth of focus that is provided by modern presbyopia-compensating intraocular ...
  • Impact of lens material on objective refraction in eyes with trifocal diffractive intraocular lenses 

    Garzón Jimenez, Nuria; Poyales, Francisco; García Montero, María; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario; Albarrán Diego, César (2021-01-01)
    Article
    Accés restringit per política de l'editorial
    Purpose: Compare subjective (Rx) and objective (ObjRx) refractions outcomes with two autorefractors models and an aberrometer in eyes implanted with a hydrophobic trifocal IOL (FineVision POD F GF, Physiol, Liége, Belgium) ...
  • Detection and removal of dust artifacts in retinal images via sparse-based inpainting 

    Barrios Montes, Erik Miguel; Sierra, E.; Romero Pérez, Lenny Alexandra; Millán Garcia-Varela, M. Sagrario; Marrugo Hernandez, Andrés Guillermo (2021-09)
    Article
    Accés obert
    Dust particle artifacts are present in all imaging modalities but have more adverse consequences in medical images like retinal images. They could be mistaken as small lesions, such as microaneurysms. We propose a method ...
  • Correlación y concordancia entre la técnica de retinoscopia de Mohindra y la retinoscopia con ciclopléjico en la infancia 

    Morales Ruiz, Hari; Fernández Agrafojo, Dora; Cardona Torradeflot, Genís (2022-01)
    Article
    Accés restringit per política de l'editorial
    Antecedentes y objetivo: La retinoscopía, como técnica objetiva de evaluación del estado refractivo, es especialmente útil en la edad infantil. La técnica de Mohindra (RM) es una alternativa para aquellos pacientes en los ...
  • El reto de reemplazar el cristalino 

    Millán Garcia-Varela, M. Sagrario (2021-11-16)
    Article
    Accés obert
    La catarata o pérdida de transparencia del cristalino es un trastorno de la visión muy invalidante que ha sufrido la humanidad a lo largo de la historia. En las últimas décadas se trata con éxito mediante la sustitución ...
  • Acto central en España del Día Internacional de la Luz en la Facultad de Óptica y Optometría de Terrassa 

    Pérez Cabré, Elisabet (2020-09-30)
    Article
    Accés restringit per política de l'editorial
  • Diseño y caracterización de un dispositivo óptico para la evaluación de lentes intraoculares in vitro 

    Azor Morón, Juan Antonio; Mendoza Parraga, Alison; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario (Comité de Optoelectrónica, 2021)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    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 ...

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