Centre for Sensors, Instruments and Systems Development

Universitat Politècnica de Catalunya

Shaping light to your needs

Foto Foto Foto Foto

New methods and instrumentation to study...

Projects
back

Project

New methods and instrumentation to study the human eye optics and multispectral images.

Principal investigator

Jaume Pujol Ramo [+info]

Summary

This coordinated project is situated in the context of two fields of investigation with a great interest such as the physiological optics and the colour are, and its main objective is to develop new methods and instrumentation in physiological optics and multispectral systems.
In the field of physiological optics three main objectives will be tackled:

i) Development of new sensors to measure the optical quality of the eye, which can improve the features of those used nowadays, with
special emphasis on the possibility of their integration into systems that allow an integral evaluation of the ocular optics.

ii) Study of the dynamic of aberrations and ocular optical quality during the accommodation process in order to develop an instrument that allows solving the problem of the objective measurement of accommodation and pseudo-accommodation in clinics.

iii) Study of the multifocality in the human eye by means of developing new techniques for the evaluation in vivo and in vitro of the compensating systems of refraction and presbyopia, specially multifocal that will allow to make progress in the knowledge and understanding of the behaviour of the human visual system when different images are formed on the retina simultaneously. Its application is situated in a field of great impact as the improvement of vision is.

In the field of science and technology of colour three main objectives will also be tackled:

i) Development of new multispectral systems for the optical and visual characterization of materials with special optical properties (goniochromatism, luminiscense, textures, etc.), which can contribute to the solution of some existing problems. These systems with response in the UV-VIS-IR will be able to be used in fields of unquestionable interest such as medical image, digitalization of artworks and automatic measurement of the skin colour.

ii) Synthesis of nanopigments, with special emphasis on the enlargement of colour range and coloration of different materials using nanopigments.

iii) Multispectral printing, developing new multispectral systems to allow printers calibration and suggesting new characterization models for these devices.

The majority component of the project is of applied research and technological development and the results can be of wide application in different sectors of social and industrial interest like the biomedical, oftallmic, biochemical, chemistry of colorants, textile, plastics, paintings, multimedia image technologies, motors, construction materials, etc. In the project, applications in different fields with the collaboration of
technological institutes and companies interested in the obtained results and their possible transference are included.

Publications

Comunicació a congrés nacional (en anglès): "Chorro, E., Vilaseca, M., Herrera, J.A., Perales, E., Martinez-Verdu, F., Pujol, J. (2010) "Evaluación del nivel de repetibilidad para medidas de color obtenidas mediante dos sistemas de captura digital de imagen". IX Congreso Nacional del Color (CNC 2010), Sociedad Española de Óptica (SEDO). Alacant, 29 Juny - 2 Juliol." (2010)

Comunicació a congrés nacional (en anglès): "Ferrer, E., Vilaseca,M., Pujol, J., Arjona, M. (2010) "Desarrollo de un sistema hiperespectral para la medida del color en muestras extensas con patrones especialmente complejos". Actes del Congrés: IX Congreso Nacional de Color (CNC 2010), Sociedad Española de Óptica, pag. 216-219." (2010)

Comunicació a congrés nacional (en anglès): "Martínez, O., Vilaseca, M., Pizarro, Arjona, M., J., Pujol, J. (2010) "Utilización de LEDs en sistemas multiespectrales: Influencia del ángulo y del tiempo en la emisión espectral". Actes del Congrés: IX Congreso Nacional de Color (CNC 2010), Sociedad Española de Óptica (SEDO 2010), pag. 18-21" (2010)

Comunicació a congrés internacional (en anglès): "Benito, A., Vilaseca, M., Mirabet, S., Pérez, G.M., Romero, M.J., Pujol, J., Marín, J.M., Güell, J.L., Artal, P. (2010): "Evaluating tear film quality in normal and midly symptomatic dry eyes with a double-pass method." Annual meeting of the Association for Research in Vision and Ophthalmology (ARVO2010). Miami, USA " (2010)

Comunicació a congrés internacional (en anglès): "Chorro, E., Vilaseca, M., Herrera, J.A:, Perales, E., Martinez-Verdú, F.M., Pujol, J. (2010) "Evaluation of the repeatability and reproducibility levels for colour measurement obtained by digital imaging capture devices. CGIV 2010. Proceedings of the Fifth European Conference on Colour in Graphics, Imaging and Vision, p. 366-371" (2010)

Comunicació a congrés internacional (en anglès): "Gor, S.R., Sandoval, J.D., Ramallo, A., Vilaseca, M., Pujol, J. "Spectral reflectance analysis of tobacco leaves and fungus infection detection. AIC 2010. AIC Proceedings of the Color and Food, Interim Meeting of the International Color Association." (2010)

Comunicació a congrés internacional (en anglès): "Martinez, J.A., Ondategui, J.C., Vilaseca, M., Pujol, J. EMPVO 2010. "Comparative study of optical and intraocular scattering parameters betweeen healthy young and adult population. EOS Topical Meeting Proceedings: 5th European Meeting on Visual and Physiological Optics, pag. 62." (2010)

Comunicació a congrés internacional (en anglès): "Martinez, O., Vilaseca, M., Pizarro, C., Ferrer, E., Arjona, M. Pujol, J. (2010). "Spectral variability of light-emitting diodes with angle". CGIV 2010. Proceedings of the Fifth European Conference on Colour in Graphics, Imaging and Vision, p. 547-553" (2010)

Comunicació a congrés internacional (en anglès): "Ondategui, J.C., Martínez Roda, J.A., Burgos, F.J., Giner, A., Vilaseca, M., Pujol, J. (2010). "Optical quality and intraocular scattering in normal young human population: normalization study". ARVO 2010. Miami, USA. May 2010 " (2010)

Comunicació a congrés internacional (en anglès): "Sandoval, J.D., Gor, S.R., Ramallo, J., Sfer, A., Colombo, E., Vilaseca, M., Pujol, J. "Spectral signatures: A way to identify species and conditions of vegetables" AIC 2010. AIC Proceedings of the Color and Food, Interim Meeting of the International Color Association." (2010)

Paper: "de Lasarte M., Arjona M., Vilaseca M., Pujol J. (2010) "Influence of the Number of Samples of the Training Set on Accuracy of Color Measurement and Spectral Reconstruction". Journal of Imaging Science and Technology. May-Jun 2010, pag. 1-10 "

Paper: "de Lasarte, M., Arjona, M., Vilaseca, M., Martínez-Verdú, F.M., Pujol, J. (2010). "Luminance adaptation model for increasing the dynamic range of an imaging system based on a CCD camera". Optik 122 (2011) 1367– 1372"

Paper: "Vilaseca M., Peris E., Pujol J., Borras R., Arjona M. (2010) "Intra- and inter-session repeatability of a double-pass instrument. Optometry and Vision Science vol. 87. Sept. 2010 (nr.9), pag. 675-681."

Patent: "Sistema y método de caracterización de la calidad óptica y del rango pseudoacomodativo de medios multifocales utilizados para la corrección de defectos visuales."

Extranet
CD6 Centre for Sensors, Instruments and Systems Development
Rambla de Sant Nebridi, 10  ·  08222  ·  Terrassa (Barcelona)