Javier Hernández-Andrés  Departamento de Óptica - Univ. de Granada - Spain
		Research	Papers in journals	Papers in meetings	Editorial activity and reviews
		Other scientific activities	Erasmus-Mundus CIMET	Memberships	Links

Javier Hernández-Andrés
Associate Professor
Departamento de Óptica
Facultad de Ciencias (Edificio Mecenas)
Campus Fuentenueva
Universidad de Granada
18071 - GRANADA
SPAIN

Phone: (34)-958 242929
Fax: (34)-958 248533
e-mail:

Master Erasmus-Mundus CIMET

• European Master Erasmus-Mundus "Color in Informatics and Media Technology" (CIMET): Four european institution (University of Granada (Spain), University of Joensuu (Finland), Gjovik University College (Norway) and University of Saint-Etienne (France)) gather their skills and knowledge in the fields of color vision, optics, image processing, phyics, instrumentation and computer science to start the Master in 2008/09.
• The study programme of this Master course is broadly interdisciplinary, encompassing photonics, computer vision and imaging science, computer science and multimedia technology as a mix of relevant theoretical and practical knowledge. The objective is to educate students in advanced methodologies and models in computationnal color science with two goals of research orientation and further studies at the doctoral level on one hand, and practical applications on the other hand. CIMET offers three areas of specialization: Color Imaging Science, Spectral Color Science and Multimedia Technology Science. These areas are being emergent, rapidly evolving, and of growing impact on the Information Society Technologies which require specialized competencies.
• The first semester will be devoted to foundation courses necessary to students before beginning the two specializations they will follow. Foundation courses will be proposed in any university of the consortium. The first specialisation, in the second semester, will be devoted to compulsory courses in color imaging science necessary to students before beginning the second specialization. It will be done either in Granada or Saint Etienne. The second specialisation, in the third semester, will be done either in Joensuu or Gjøvik. Therefore, during the first three semesters, students will spend their Master Courses in either two universities or three universities. This arrangement leaves open the possibility to visit during the Master thesis period another university of the consortium which will not deliver a degree. During one of the first three semesters, students will have to follow courses on the culture and language of the visited country.
• Courses will be taught in English and are structured according to the ECTS with 120 credits run over four semesters of full-time study. Students will be awarded a double (or multiple) degree, at postgraduate-level (Msc of Science, 300 ECTS), from the two (or three) degree-granting Universities visited. The CIMET programme is intended for top level non-EU and EU students with a fluent knowledge in spoken and written English (TOEFL 550). Thirty students will be integrated each year in this program, with a professor/student ratio close to one. Admission will be based on academic excellence. Applicants should have a BSc degree (i.e. 180 ECTS) in the European LMD system, or equivalent, in computer science, physics or mathematics.

Education

Thesis Dissertation

"Spectral and colorimetric characteristics of daylight and skylight in Granada" (in Spanish)

Research Interests (as a member of the Color Imaging Lab at the University of Granada)

To improve and develop multispectral techniques for the object recognition, illuminants and reflectances estimation.

To optimize and design of optical sensors in multispectral systems for the identification and recovery of natural and artificial illuminants

To remodel object identification algorithms invariants to illuminant changes.

Applications of multi and hiperspectral imaging systems: elaborate robust and efficient algorithms to be employed for the solution of real problems in specific application areas.

Basic and applied colorimetry

Analysis of the spatio-chromatic structure of natural images

Artificial vision, machine vision

Atmospheric optics

Color vision: color constancy, spatial vision, contrast sensitivity and chromatic frequencies.

Computational optical colour correlation for object detection and recognition.

Teaching optics and physics

Scientific Publications

A) Papers in Refereed Journals

1. Influence of natural daylight on soil-color description:  assessment using a color-appearance model
   Soil Science Society of America Journal (accepted for publication) (2010)
   M. Sánchez-Marañón, P.A. García, R. Huertas, J. Hernández-Andrés and M. Melgosa

2. Optimum Sensors for Colour Constancy in Scenes Illuminated by Daylight
   Journal of the Optical Society of America A, in press (2010)
   S. Ratnasingam, S. Collins, and J. Hernández-Andrés
   
   
3. Calibrating the elements of a multispectral imaging system
   Journal of the Imaging Science and Technology, vol. 53, 031102-1-031110-10, May-Jun (2009)
   M.A. López-Álvarez, J. Hernández-Andrés, J. Romero, J. Campos and A. Pons
   
   
4. Exploring what the eye cannot see
   Optics and Photonics News, vol. 20, N.5, 18-19 (2009)
   J. Hernández-Andrés, J.A. García, J.L. Nieves
   
   
5. Fountain rainbows
   Applied Optics, vol. 47, H220-H224, Diciembre (2008)
   S.D. Gedzelman, J. Hernández-Andrés
   
   
6. Quantifying the "milky sky" experiment
   Applied Optics, vol. 47, H128-H132, Diciembre (2008)
   S.D. Gedzelman, M.A. López-Álvarez, J. Hernández-Andrés and R. Greenler
   
   
7. Retrieval of the optical depth by an all-sky CCD camera
   Applied Optics, vol. 47, H182-H189, Diciembre (2008)
   F.J. Olmo, A. Cazorla, L. Alados-Arboledas, M.A. López-Álvarez, J. Hernández-Andrés and J.Romero
   
   
8. Using a trichromatic CCD camera for spectral skylight estimation
   Applied Optics, vol. 47, H31-H38, Diciembre (2008)
   M. A. López-Álvarez, J. Hernández-Andrés, J. Romero, F. J. Olmo, A. Cazorla and L. Alados-Arboledas.
   
   
9. Developing an optimum computer-designed multispectral system comprising a monochrome CCD camera and a liquid-crystal tunable filter
   Applied Optics, vol. 47, 4381-4390 (2008)
   M.A. López-Álvarez, J. Hernández-Andrés, J. Romero
   
   
10. A simple experiment to distinguish between replicated and duplicated compact discs using Fraunhofer diffraction
    American Journal of Physics, vol. 76, 1137-1140, December (2008).
    J. Fernández-Dorado, J. Hernández-Andrés, E.M. Valero, J. L. Nieves and J. Romero
    
    
11. Sensor-response-ratio constancy under changes in natural and artificial illuminants
    Color Research and Application, Vol. 32, 284-292 (2007), August 2007
    J. Romero, D. Partal, J.L. Nieves and J. Hernández-Andrés
    
    
12. Recovering fluorescent spectra with an RGB digital camera and color filters using different matrix factorizations
    Applied Optics, Vol. 46, 4144-4154 (2007), July 2007
    J.L. Nieves, E.M. Valero, J. Hernández-Andrés and J. Romero
    
    
13. Selecting algorithms, sensors and linear bases for optimum spectral recovery of skylight
    Journal of the Optical Society of America A, Vol. 24, N. 4, pp. 942-956, April 2007
    M.A. López-Álvarez, J.Hernández-Andrés, E.M. Valero, J. Romero
    
    
14. Spectral sensitivity of sensors for a color-image descriptor invariant to changes in daylight conditions
    Color Research and Application, Vol. 31, N. 5, pp. 391-398, October 2006.
    J. Romero, J.Hernández-Andrés, J.L. Nieves and E.M. Valero
    
    
15. Crepuscular and nocturnal illumination and its effects on color perception by the nocturnal hawkmoth Deilephila elpenor
    The Journal of Experimental Biology, Vol. 209, N. 5, pp. 789-800, Febrero 2006.
    S. Johnsen, A. Kelber, E. Warrant, A.M. Sweeney, E.A. Widder, R.L. Lee, Jr., and J.Hernández-Andrés
    
    
16. Multispectral synthesis of daylight using a commercial digital CCD camera
    Applied Optics, Vol. 44, N. 27, pp. 5696-5703, September 2005
    J. L. Nieves, E.M. Valero, S.M.C. Nascimento, J.Hernández-Andrés and J. Romero
    
    
17. Designing a practical system for spectral imaging of skylight
    Applied Optics, Vol. 44, N. 27, pp. 5688-5695, September 2005
    M.A. Lopez-Alvarez, J. Romero, R.L. Lee, Jr. and J.Hernández-Andrés
    
    
18. Colors of the daytime overcast sky
    Applied Optics, Vol. 44, N. 27, pp. 5712-5722, September 2005
    R.L. Lee, Jr. and J.Hernández-Andrés
    
    
19. Short-term variability of overcast brightness
    Applied Optics, Vol. 44, N. 27, pp. 5704-5711, September 2005
    R.L. Lee, Jr. and J.Hernández-Andrés
    
    
20. Group theoretical structure of spectral spaces
    J. Math. Imaging and Vision, Vol. 23, N. 3, pp. 297-313, November 2005
    R. Lenz, T.H. Bui, and J.Hernández-Andrés
    
    
21. Changes in contrast thresholds with mean luminance for chromatic and luminance gratings: transition from the DeVries-Rose to Weber regions revisited
    Color Research and Application, Vol. 29, N. 3, pp. 177-182, June 2004
    E.M. Valero, J.L. Nieves, J.Hernández-Andrés, and J.A. García
    
    
22. Spectral-reflectance linear models for color pattern recognition
    Applied Optics, Vol. 43, N. 9, pp. 1880-1891, March 2004
    J.L. Nieves, J.Hernández-Andrés, E.M. Valero, and J. Romero
    
    
23. Spectral daylight recovery using only a few sensors
    Journal of the Optical Society of America A, Vol. 21, N. 1, pp. 13-23, January 2004
    J.Hernández-Andrés, J.L. Nieves, E.M. Valero, and J. Romero
    
    
24. Virtual tunnels and green glass: the colors of common-mirrors
    American Journal of Physics, Vol. 72, N.1, pp. 53-59, January 2004
    R.L. Lee, Jr. and J.Hernández-Andrés
    
    
25. Color-signal filtering in the Fourier-frequency domain
    Journal of the Optical Society of America A, Vol. 20, N. 9, pp. 1714-1724, September 2003
    J. Romero, E. Valero, J.Hernández-Andrés, and J.L.Nieves
    
    
26. Colour appearance of surfaces as affected by different time-varying colour-adaptation sequences
    Optical Review, Vol. 10, N. 4, pp. 221-230, July 2003
    J.L. Nieves, E.M. Valero, J.Hernández-Andrés, and J. Romero
    
    
27. Color coordinates and color appearance of objects with daylight changes
    Color Research and Application, Vol. 28, N. 1, pp. 25-35, February 2003
    J. Romero, J.Hernández-Andrés, J.L.Nieves and J.A. Garcia
    
    
28. Color and luminance asymmetries in the clear sky
    Applied Optics, Vol. 42, N. 3, pp. 458-464, January 2003
    J.Hernández-Andrés, R.L. Lee, Jr. and J. Romero
    
    
29. Measuring and modeling twilight's purple light
    Applied Optics, Vol. 42, N. 3, pp. 445-457, January 2003
    R.L. Lee, Jr. and J.Hernández-Andrés
    
    
30. Spectral-reflectance function recovery for improved colour-constancy experiments
    Displays, Vol. 23, N. 5, pp. 213-222, November 2002
    J.L. Nieves, F. Pérez-Ocón, J.Hernández-Andrés and J. Romero
    
    
31. Fizeau fringes at home
    American Journal of Physics, Vol. 70, N. 7, pp. 684-688, July 2002
    J.Hernández-Andrés, E. Valero, J.L.Nieves and J. Romero
    
    
32. Color and spectral analysis of daylight in southern Europe
    Journal of the Optical Society of America A, Vol. 18, N. 6, pp. 1325-1335, June 2001
    J.Hernández-Andrés, J. Romero, J.L. Nieves and R.L. Lee, Jr.
    
    
33. Colorimetric and spectroradiometric characteristics of narrow-field-of-view clear skylight in Granada, Spain
    Journal of the Optical Society of America A, Vol. 18, N. 2, pp. 412-420, February 2001
    J.Hernández-Andrés, J. Romero and R.L. Lee, Jr.
    
    
34. Calculating correlated color temperatures across the entire gamut of daylight and skylight chromaticities
    Applied Optics, Vol. 38, N. 27, pp. 5703-5709, September 1999.
    J.Hernández-Andrés, R.L. Lee, Jr., J. Romero
    
    
35. Linear bases for spectral reflectance functions of acrylic paints
    Color Research and Application, Vol. 23, N. 1, pp. 39-45, February 1998.
    A.García-Beltrán, J.L.Nieves, J.Hernández-Andrés, J.Romero
    
    
36. Testing linear models on spectral daylight measurements
    Applied Optics, Vol. 37, N. 6, pp. 971-977, February 1998.
    J.Hernández-Andrés, J.Romero, A.García-Beltrán, J.L.Nieves
    
    
37. Linear bases for representation of natural and artificial illuminants
    Journal of the Optical Society of America A, Vol. 14, N. 5, pp. 1007-1014, May 1997
    J. Romero, A. García-Beltrán, J. Hernández-Andrés
    
    B) Informative papers
    
    
38. ¿Fotografiamos el color tal y como lo percibimos?
    J.L.Nieves, J.A. García, J.Hernández-Andrés, R. Huertas
    EUREKA, en prensa, (2010)
39. Luz-día: Composición y efectos de la radiación.
    J.Hernández-Andrés, J.L.Nieves
    VER Y OÍR, Vol. 106, p. 335-342, Junio 1996
40. Características colorimétricas de la luz-día.
    J.Hernández-Andrés, A.García-Beltrán
    VER Y OÍR, Vol. 113, p. 125-130, Marzo 1997
    
    C) Papers presented at Scientific Meetings
    
    
41. Simulating Crepuscular Rays
    S.D. Gedzelman, J. Hernández-Andrés, and M. Vollmer
    10th International Meeting Light and Color in Nature, St. Mary's City, Maryland, EEUU (2010)
42. Color Degradation Of Objects Due To The Atmosphere
    J. Hernández-Andrés, R. Luzón, J. L. Nieves and J. Romero
    10th International Meeting Light and Color in Nature, St. Mary's City, Maryland, EEUU (2010)
    
43. Recovering normal vectors and albedo under uncontrolled illumination with an RGB digital camera
    C. Plata, J.L. Nieves, J. Hernández-Andrés and J. Romero
    CGIV-10, 5th European Conference on Colour in Graphics, Imaging and Vision, Joensuu, Finland (2010), pp. 387-392
44. Viabilidad del uso de algoritmos de clustering en la recuperación espectral a partir de respuestas de un conjunto de sensores
    Eva M. Valero, N. Lyubova, J.L. Nieves, J. Hernández-Andrés
    IX Congreso Nacional de Color, Alicante, España (Julio 2010), pp....
    
45. A Method for Designing and Assessing Sensors for Chromaticity Constancy in High Dynamic Range Scenes
    Sivalogeswaran Ratnasingam, Steve Collins, J. Hernández-Andrés
    Proceedings of Color Imaging Conference CIC17, Alburquerque, New Mexico (EEUU) (2009), pp. 15-20,
    
46. Color changes in a natural scene due to the interaction between the light and the atmosphere.
    J.Romero, R. Luzón, J. Hernández-Andrés and J.L. Nieves
    The 11th Congress of the International Colour Association, AIC2009, Sydney (Australia), (2009), pp....
47. Influencia de la curtosis de muestras rugosas en la recuperación de albedo y normales con cámara RGB
    C. Plata, J.L. Nieves, J. Hernández-Andrés and J. Romero
    IX Reunión Nacional de Óptica, Ourense (2009), pp. 87-88
48. Red Temática de Investigación Cooperativa "Procesado de Imágenes y Señal Multidimensional (PRISMA)"
    G. Cristobal, G. Bueno, E.Gil, J.L. Nieves and J. Hernández-Andrés
    IX Reunión Nacional de Óptica, Ourense (2009), pp.
49. Divulgación de la óptica en contextos multidisciplinares
    J.A.García, J. Hernández-Andrés, J.L. Nieves, J. Romero, R. Huertas, L. Gómez, E.M. Valero, R. Roa, E. Hita
    IX Reunión Nacional de Óptica, Ourense (2009), pp. 25-26
50. Estudio de la difracción por reflexión en superficies pseudo-periódicas y aplicación a la detección de discos ópticos originales.
    J. Fernández-Dorado, J. Hernández-Andrés, J.L. Nieves, E.M. Valero, J. Romero
    IX Reunión Nacional de Óptica, Ourense (2009), pp. 62
51. New sample election method for multispectral system color calibration
    M.A. López-Álvarez, J. Hernández-Andrés, J. Romero
    AIC Interim Meeting 2008, Stockholm, Sweden, June 2008
52. Building an optimum computer-designed multispectral system for skylight acquisition
    M.A. López-Álvarez, J. Hernández-Andrés, J. Romero
    CGIV-08, 4th European Conference on Colour in Graphics, Imaging and Vision, Terrassa, Barcelona, 9-13 Junio 2008
53. Diseño de un sistema multiespectral basado en filtro sintonizable.
    M. A. López-Álvarez, J. Hernández-Andrés, J. Romero
    VIII Congreso Nacional de Color, Madrid, Septiembre 2007
54. Elección de los espectros de entrenamiento para el calibrado de un sistema multiespectral.
    M.A. López-Álvarez, J. Hernández-Andrés, J. Romero.
    VIII Congreso Nacional de Color, Madrid, Septiembre 2007.
55. Variación del ruido con el tiempo de exposición en una CCD.
    M.A. López-Álvarez, J. Hernández-Andrés, J. Campos, A. Pons, J. Romero.
    VIII Congreso Nacional de Color, Madrid, Septiembre 2007
56. Taking advantage of a trichromatic CCD digital camera for spectral estimation
    M.A. López-Álvarez, J. Hernández-Andrés, J. Romero, F.J. Olmo, A. Cazorla, L. Alados-Arboledas
    9th International Meeting on Light and Color in Nature, Montana, 25-29 June, 2007
57. Using all-sky imager to obtain aerosol and cloud optical properties
    F.J. Olmo, A. Cazorla, L. Alados-Arboledas, M.A. López-Álvarez, J. Hernández-Andrés, J. Romero
    9th International Meeting on Light and Color in Nature, Montana, 25-29 June, 2007
58. Crepuscular and nocturnal illumination and its effects on color perception by the nocturnal kawkmoth Deilephila elpenor
    S. Jonsen, A. Kelber, E. Warrant, A.M. Sweeney, E.A. Widder, R.L. Lee, Jr., J. Hernández-Andrés
    9th International Meeting on Light and Color in Nature, Montana, 25-29 June, 2007
59. Ondas: experiencias con cuerdas de guitarra
    J.A. García, J. Hernández-Andrés, M.A. López, J.L. Nieves, J. Romero
    XXXI Reunión Bienal de la Real Sociedad Española de Física y 17º Encuentro Ibérico para la Enseñanza de la Física Granada (2007), pp. 152-153
60. Selección de filtros y algoritmos óptimos en el diseño de sistemas multiespectrales.
    M.A. López-Álvarez, J. Hernández-Andrés, J.L. Nieves, J. Romero.
    VIII Reunión Nacional de Óptica, Alicante, (Septiembre 2006), Libro de Actas, pp. 68.
61. Análisis y diseño de sistemas para la recuperación de luz-cielo y luz-día mediante sistemas multiespectrales.
    J. Romero, J.L. Nieves, J. Hernández-Andrés, E. M. Valero, M.A. López-Álvarez, C. Plata.
    VIII Reunión Nacional de Óptica, Alicante, (Septiembre 2006), Libro de Actas, pp. 40.
62. Separating illuminant and surface reflectance spectra from filtered trichromatic camera measurements
    M.A. López-Álvarez, E.M. Valero, J. Hernández-Andrés
    IS&T's 3rd European Conference on Colour in Graphics, Imaging, and Vision, Leeds, UK, (June 2006)
63. Spectral recovery of artificial illuminants using a CCD colour camera with Nonnegative Matrix Factorization and Independent Component Analysis
    J.L. Nieves, E. Valero, J. Hernández-Andrés, J. Romero
    IS&T's 3rd European Conference on Colour in Graphics, Imaging, and Vision, Leeds, UK, (June 2006)
64. Influence of the recovery method in the optimum sensors for spectral imaging of skylight
    M.A. López-Álvarez, J. Hernández-Andrés, J.L. Nieves, J. Romero
    Spectral Imaging: Eighth International Symposium on Multispectral Color Science, San José, California, EEUU, (January 2006)
65. Multispectral synthesis of daylight using a digital CCD camera
    J.L. Nieves, E. Valero, S.M.C. Nascimento, J. Hernández-Andrés, J. Romero
    AIC Colour 05, Granada, Spain, (May 2005), Proceedings Book, pp. 189-192.
66. Optimal sensors for recovering skylight in the presence of noise
    M. A. López-Álvarez, J. Hernández-Andrés, R. L. Lee Jr., J. Romero
    AIC Colour 05, Granada, Spain, (May 2005), Proceedings Book, pp. 197-200.
67. Image quality evaluation for ICA-based compression of natural scenes
    E.M. Valero, J.L. Nieves, J. Hernández-Andrés, J. Romero
    AIC Colour 05, Granada, Spain, (May 2005), Proceedings Book, pp. 527-530.
68. Influence of daylight changes in colour coordinates of a Munsell Soil colour chart
    M. Sánchez-Marañón, M. Melgosa, R. Huertas, J. Hernández-Andrés, J. L. Nieves, J. A. García, J. Romero
    AIC Colour 05, Granada, Spain, (May 2005), Proceedings Book, pp. 859-862.
69. Cone-signal ratio dependence on natural and artificial illuminants
    J. Romero, D. Partal, J. L. Nieves and J. Hernández-Andrés
    AIC Colour 05, Granada, Spain, (May 2005), Proceedings Book, pp. 883-886.
70. Colorimetric and spectral combined metric for the optmization of mustispectral systems
    M.A. López-Álvarez, J. Hernández-Andrés, E.M. Valero, J.L. Nieves
    AIC Colour 05, Granada, Spain, (May 2005), Proceedings Book, pp. 1685-1688.
71. Identification of clouds and sky in digital images using a principal component analysis
    C. Plata, E.M. Valero, A. Cazorla, F.J. Olmo, L. Alados-Arboledas, J. Hernández-Andrés, J.L. Nieves
    AIC Colour 05, Granada, Spain, (May 2005), Proceedings Book, pp. 1689-1692.
72. Looking for an invariant under daylight changes with L,M,S- type sensors
    J. Romero, D. Partal, J. L. Nieves, J. Hernández-Andrés
    AIC 2004 Midterm Meeting, Porto Alegre, Brasil, (November 2004)
73. Towards a skylight spectral remote sensing camera
    J. Hernández-Andrés, M.A. López-Álvarez, R.L. Lee, Jr.
    8th Topical Meeting in Meteorological Optics 2004, Bad Honnef, Germany
74. Temporal variability of overcast illuminances
    R.L. Lee, Jr., J. Hernández-Andrés
    8th Topical Meeting in Meteorological Optics 2004, Bad Honnef, Germany
75. Colors of clear and overcast skies
    R.L. Lee, Jr., J. Hernández-Andrés
    8th Topical Meeting in Meteorological Optics 2004, Bad Honnef, Germany
76. Atención visual selectiva con Gabor cromáticos: efectos de interferencia
    E.M. Valero, J. L. Nieves, L. Chelazzi, J. Hernández-Andrés
    VII Congreso Nacional de Color, Pamplona, (May 2004), Libro de Actas, pp. 183-184.
77. Uso de modelos lineales de representación de reflectancias e iluminantes para el reconocimiento de objetos policromáticos
    C. Plata, J. L. Nieves, J. Hernández-Andrés, E.M. Valero
    VII Congreso Nacional de Color, Pamplona, (May 2004), Libro de Actas, pp. 163-164.
78. Optimización de invariantes frente al cambio de iluminante
    J. Romero, J. Hernández-Andrés, D. Partal, E.M. Valero
    VII Congreso Nacional de Color, Pamplona, (May 2004), Libro de Actas, pp. 165-166.
79. Detección remota de luz-cielo con tres sensores
    M.A. López-Álvarez, J. Hernández-Andrés, J.L. Nieves, J. Romero
    VII Congreso Nacional de Color, Pamplona, (May 2004), Libro de Actas, pp. 59-60.
80. Testing spectral sensitivity of sensors for color invariant at a pixel
    J. Romero, J. Hernández-Andrés, J. L. Nieves and E. Valero.
    Second European Conference on Color in Graphics, Imaging and Vision, Aachen, Germany, (April 2004), Proceedings, pp. 106-109.
81. Optimal spectral sensitivities of a multispectral image acquisition system
    J. Hernández-Andrés, E. M. Valero, J. L. Nieves and J. Romero
    Second European Conference on Color in Graphics, Imaging and Vision, Aachen, Germany, (April 2004), Proceedings, pp. 418-421.
82. Optical color pattern recognition based on linear models of surface and illuminant spectra
    J. L. Nieves, J. Hernández-Andrés, E.M. Valero and J.Romero
    Second European Conference on Color in Graphics, Imaging and Vision, Aachen, Germany, (April 2004), Proceedings, pp. 125-129.
83. Independent component analysis with different daylight illuminants
    E.M. Valero, J. L. Nieves, J. Hernández-Andrés and J.Romero
    Second European Conference on Color in Graphics, Imaging and Vision, Aachen, Germany, (April 2004), Proceedings, pp. 193-196.
84. Time-Frequency Analysis for Multi-Channel Color Pattern Recognition
    R. Lenz and J. Hernández-Andrés
    Second European Conference on Color in Graphics, Imaging and Vision, Aachen, Germany, (April 2004), Proceedings, pp. 509-514.
85. Filtrado paso-banda en el dominio de las frecuencias cromáticas como método para distinguir cambios de iluminante de cambios de reflectancia
    E.M. Valero, J.L. Nieves, J. Hernández-Andrés, J.Romero
    7ª Reunión Nacional de Óptica, Santander, (Sept. 2003), Libro de Actas, pp. 614-616.
86. Modelado lineal de reflectancias para el reconocimiento de objetos en color
    J.L. Nieves, J. Hernández-Andrés, E.M. Valero, J. Romero
    7ª Reunión Nacional de Óptica, Santander, (Sept. 2003), Libro de Actas, pp. 426-428.
87. Reconstrucción espectral de luz-día con tres sensores
    J. Hernández-Andrés, J.L. Nieves, E.M. Valero, J. Romero
    7ª Reunión Nacional de Óptica, Santander, (Sept. 2003), Libro de Actas, pp. 257-259.
88. Túneles infinitos y espejos verdes
    J. Hernández-Andrés, R.L. Lee, Jr.
    7ª Reunión Nacional de Óptica, Santander, (Sept. 2003), Libro de Actas, pp. 254-256.
89. Colorimetría, visión del color, reproducción y procesado de imágenes en color
    J. Romero, R. Huertas, F. Vega, M.A. Ben Abdelfadel, J.M. Medina, E. Valero, C. Salas, J. Hernández-Andrés, A. Yebra, J.A. Díaz, J.L. Nieves, F. Pérez-Ocón, J.A. Martínez, M.M. Pérez, J.R. Jiménez, A. García-Beltrán, M. Rubiño, J.A. García, M. Melgosa, L. Jiménez del Barco, E. Hita.
    7ª Reunión Nacional de Óptica, Santander, (Sept. 2003), Libro de Actas, pp. 537-539.
90. Improvements of daylight mathematical representation for color invariant at a pixel
    J. Romero, J. Hernández-Andrés, J.L. Nieves and E. Valero
    AIC 2003 Meeting, Bangkok, Tailandia (August 2003)
91. One-parameter subgroups and the chromaticity properties of time-changing illumination spectra
    R. Lenz, T. H. Bui, J. Hernández-Andrés
    IS&T/SPIE Symposium Electronic Imaging Science and Technology, Santa Clara, California, USA, (January 2003), Proceedings SPIE, Vol. 5008, pp. 237-248.
92. Asimetrías de color y luminancia en cielos despejados.
    J. Hernández-Andrés, R. L. Lee, Jr., J. Romero
    VI Congreso Nacional de Color, Sevilla, (Sept. 2002), Libro de Actas, pp. 55-56.
93. Franjas de Fizeau con un escáner.
    J. Hernández-Andrés, E. Valero, J.L. Nieves, J. Romero.
    VI Congreso Nacional de Color, Sevilla, (Sept. 2002), Libro de Actas, pp. 183-184.
94. Variaciones del umbral de detección de redes cromáticas rojo-verde con el nivel de luminancia media
    E.M. Valero, J.L. Nieves, J. Hernández-Andrés, J.A. García, J. Romero.
    VI Congreso Nacional de Color, Sevilla, (Sept. 2002), Libro de Actas, pp. 51-52.
95. Loss in spectral information in the colour signals filtered by the human visual system.
    J. Romero, J.L. Nieves, E. Valero, J. Hernández-Andrés, J.A. García.
    First European Conference on Color in Graphics, Imaging and Vision, Poitiers, FRANCIA, (April 2002), Proceedings, pp. 109-111.
96. Daylight spectral power distribution recovery through a linear model and few filters
    J. Hernández-Andrés, J. Romero and J.L. Nieves
    AIC 2001 Meeting, Rochester, NY, USA (June 2001), Proceedings SPIE Vol. 4421, pp. 359-362.
97. Influence of the mean luminance on the detection threshold for red-green chromatic gratings
    J.L. Nieves, E. Valero, J. Hernández-Andrés, J.A. Garcia and J. Romero
    AIC 2001 Meeting, Rochester, NY, USA (June 2001), Proceedings SPIE Vol. 4421, pp. 833-835.
98. Color asymmetries in narrow-FOV clear-sky radiances
    J. Hernández-Andrés, R. L. Lee, Jr. and J. Romero
    Topical Meeting in Meteorological Optics 2001, Boulder, CO, USA (June 2001), Abstract book, pp. 40-40a
99. Twilight's purple light: new evidence on an old problem
    R. L. Lee, Jr. and J. Hernández-Andrés
    Topical Meeting in Meteorological Optics 2001, Boulder, CO, USA (June 2001), Abstract book, pp. 42-43
100. Color appearance maintenance with changes in daylight illuminants
     J. Romero, J. Hernández-Andrés, J.L. Nieves, J.A. García
     AIC 2000 Meeting, Seoul, Corea, (Nov. 2000), Abstract book, p. 100
101. Variaciones del umbral de detección de redes cromáticas rojo-verde con el tamaño de campo
     E. Valero, J.L. Nieves, J.A. García, J. Hernández-Andrés
     6ª Reunión Nacional de Óptica, Medina del Campo, (Sept. 2000), Libro de Actas, pp. 311-312.
102. El color del cielo despejado en Granada
     J. Hernández-Andrés, J. Romero, J.L. Nieves
     6ª Reunión Nacional de Óptica, Medina del Campo, (Sept. 2000), Libro de Actas, pp. 309-310.
103. The colour of natural light in Granada (Spain)
     J. Hernández-Andrés, J. Romero
     AIC 1999 Midterm Meeting, Varsovia, Polonia, (June 1999), Proceedings, pp. 115-120
104. El color de la luz natural en Granada
     J. Hernández-Andrés, J.L. Nieves, J. Romero
     V Congreso Nacional de Color, Terrassa, (June 1999), Libro de Actas, pp. 227-228
105. Colorimetría y modelos de visión del color.
     E. Hita, J. Romero, L. Jiménez del Barco, J.A. García, M. Melgosa, M. Rubiño, J.R. Jiménez, A. García-Beltrán, M.M. Gómez, J.A. Martínez, J.L. Nieves, F. Pérez, J.A. Díaz, A. Yebra, J. Hernández-Andrés, C. Salas.
     5ª Reunión Nacional de Óptica, Valencia, (Sept. 1997), Libro de Actas, pp. 319-320.
106. Filtros de banda estrecha en el análisis de color
     A. García-Beltrán, J. Hernández-Andrés, J.L. Nieves, J. Romero
     5ª Reunión Nacional de Óptica, Valencia, (Sept. 1997), Libro de Actas, pp. 395-396
107. Determinación experimental de curvas de sensibilidad al contrate cromático para observadores normales y anómalos.
     J. Romero, E.M. Valero, J.A. García, J. Hernández-Andrés.
     IV Congreso Nacional de Color, Jarandilla de la Vera, (June 1997), Libro de Actas, pp. 188-189
108. Spectral reflectance recovering through linear model and narrow-band filters
     A. García-Beltrán, J.L. Nieves, J. Hernández-Andrés, J. Romero.
     OSA Annual Meeting, Portland, Oregon, U.S.A. (Sept. 1995), Proceedings, p. 132
     

Editorial activity and review

Other Scientific Activities

Member of the Technical Programme Committee of the 5th European Conference on Colour in Graphics, Imaging and Vision (CGIV-2006), Joensuu, Finland, June 2009.

Multispectral Imaging Technical Chair and Member of the Technical Programme Committee at the 4th European Conference on Colour in Graphics, Imaging and Vision (CGIV-2008), Terrassa, Barcelona, Spain, 9-13th June 2008.

Member of the Reviewer Committee of the IEEE International Geoscience and Remote Sensing Symposium IGARSS 2009, Cape Town (South Africa) 2009

Member of the Conference Committee del 9th International Meeting on Light and Color in Nature, Montana, USA, 25-29 de June 2007.

Member of the Technical Programme Committee of the 3rd European Conference on Colour in Graphics, Imaging and Vision (CGIV-2006), Leeds, UK, 19-22th June 2006.

Member of the Program Committee of the Fifth International Workshop on Information Optics (WIO-06), Toledo, Spain, 5-7th June 2006.

Programme Co-Chair and member of the Organizing Committee of the 10th Congress of the International Colour Association - AIC Colour 05, Granada, Spain, 8-13th May 2005.

Member of the Scientific Committee of the 8th Topical Meeting on Meteorological Optics, Bad Honnef, Germany, 13-17th June 2004.

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