GOAPI - Grup d'Òptica Aplicada i Processament d'Imatge

 

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

Recent Submissions

  • Game-based Learning vs Gamification: A Hands-On 

    Farreras Esclusa, Montserrat; Armengol Cebrian, Jesús; Bofill, Pau; Hernández Gómez, M. Angeles (Pennsylvania Association of Environmental Educators (PAEE), 2022)
    Conference report
    Open Access
    An example of gamification is a contest where students get points for solving the usual exercises of the subject matter. An example of game-based learning is an escape room where students get involved in studying and solving ...

  • Vergence and accommodation cues in stereo-localization during the Small-In Large-Out (SILO) effect 

    Argilés Sans, Marc; Cardona Torradeflot, Genís; Hosa Vila, Sandra; Sunyer Grau, Bernat (Multidisciplinary Digital Publishing Institute (MDPI), 2022-10-18)
    Article
    Open Access
    A typical procedure in vision therapy is the use of Quoits vectograms to train fusional vergence ranges by improving stereo-localization, which is the ability to correctly locate the target stimulus in space. With this ...

  • Gaming for learning 

    Armengol Cebrian, Jesús; Bofill, Pau; Farreras Esclusa, Montserrat (Universidade do Minho, 2022)
    Conference lecture
    Restricted access - publisher's policy
    In the subject of wave optics, we seek to involve students in their learning through active learning techniques. Students participate in large group classes doing small activities, competition games, solving problems,... ...

  • Far and near contrast sensitivity and quality of vision with six presbyopia correcting intraocular lenses 

    Gil Arnal, Julian Miguel Ángel; Varón Puentes, Maria Consuelo; Cardona Torradeflot, Genís; Buil Calvo, José Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2022-07-17)
    Article
    Open Access
    The objective of this prospective, randomized, double-masked study was to compare the contrast sensitivity and quality of vision of patients bilaterally implanted with the following six different presbyopia correcting ...

  • Prevalença dels factors de risc de progressió de la miopia en una mostra d’estudiants 

    Busquets, Anna; Cardona Torradeflot, Genís (2022-07)
    Article
    Open Access
    Objectius: Determinar els factors de risc d’aparició i progressió de la miopia en una mostra de joves d’entre 12 i 25 anys. Material i mètode: Es va emprar una enquesta dissenyada en GoogleForms i distribuïda a través de ...

  • Trade-off asymmetric profile for extended-depth-of-focus ocular lens 

    Romero Pérez, Lenny Alexandra; Marrugo Hernandez, Andrés Guillermo; Millán Garcia-Varela, M. Sagrario (2022-02-01)
    Article
    Open Access
    We explore the possibility of extending the depth of focus of an imaging lens with anasymmetric quartic phase-mask, while keeping the aberration within a relatively low level. Thiscan be intended, for instance, for ophthalmic ...

  • Compliance versus risk awareness with contact lens storage case hygiene and replacement 

    Cardona Torradeflot, Genís; Alonso Matarín, Silvia; Yela Paradas, Sandra (Wolters Kluwer, 2022-02-14)
    Article
    Restricted access - publisher's policy
    Significance: Compliance with hygiene and replacement of contact lens storage cases is key to avoid contact lens contamination and anterior ocular surface complications. However, compliance levels with these accessories ...

  • 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)
    Conference lecture
    Restricted access - publisher's policy
    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
    Restricted access - publisher's policy
    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, 2022-04)
    Article
    Open Access
    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)
    Conference report
    Restricted access - publisher's policy
    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)
    Conference report
    Restricted access - publisher's policy
    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 ...

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