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8 results on '"Angeloni, M."'

1. High-latitude precipitation as a driver of multicentennial variability of the AMOC in a climate model of intermediate complexity

Author

Mehling, O, Bellomo, K, Angeloni, M, Pasquero, C, von Hardenberg, J, Mehling O., Bellomo K., Angeloni M., Pasquero C., von Hardenberg J., Mehling, O, Bellomo, K, Angeloni, M, Pasquero, C, von Hardenberg, J, Mehling O., Bellomo K., Angeloni M., Pasquero C., and von Hardenberg J.

Abstract

Centennial-scale variability of the Atlantic Meridional Overturning Circulation (AMOC) in the absence of external forcing has been identified in several climate models, but proposed mechanisms differ considerably. Therefore, better understanding of processes governing AMOC variability at these timescales is needed. Here, we analyze numerical simulations with PlaSim-LSG, an Earth System Model Intermediate Complexity (EMIC), which exhibits strong multicentennial oscillations of AMOC strength under constant pre-industrial boundary conditions. We identify a novel mechanism in which these oscillations are driven by salinity anomalies from the Arctic Ocean, which can be attributed to changes in high-latitude precipitation. We further corroborate our findings by conducting a set of millennial-length sensitivity experiments, and we interpret the mechanism by formulating a three-box model which qualitatively reproduces regular oscillations of the AMOC. While PlaSim-LSG lacks complexity compared to state-of-the-art models, our results reveal that precipitation minus evaporation (P–E) change in the Arctic is a physically plausible driver of centennial-scale AMOC variability. We discuss how this mechanism might be most relevant in climate states warmer than the present-day, raising questions about the state-dependence of multicentennial AMOC variability.

Published
2023

2. A competition on generalized software-based face presentation attack detection in mobile scenarios

Author

Boulkenafet, Z. (Z.), Komulainen, J. (J.), Akhtar, Z. (Z.), Benlamoudi, A. (A.), Samai, D. (D.), Bekhouche, S. (SE.), Ouafi, A. (A.), Dornaika, F. (F.), Taleb-Ahmed, A. (A.), Qin, L. (L.), Peng, F. (F.), Zhang, L. (L.B.), Long, M. (M.), Bhilare, S. (S.), Kanhangad, V. (V.), Costa-Pazo, A. (A.), Vazquez-Fernandez, E. (E.), Pérez-Cabo, D. (D.), Moreira-Pérez, J. J. (J. J.), González-Jiménez, D. (D.), Mohammadi, A. (A.), Bhattacharjee, S. (S.), Marcel, S. (S.), Volkova, S. (S.), Tang, Y. (Y.), Abe, N. (N.), Li, L. (L.), Feng, X. (X.), Xia, Z. (Z.), Jiang, X. (X.), Liu, S. (S.), Shao, R. (R.), Yuen, P. (P.C.), Almeida, W. R. (W. R.), Andaló, F. (F.), Padilha, R. (R.), Bertocco, G. (G.), Dias, W. (W.), Wainer, J. (J.), Torres, R. (R.), Rocha, A. (A.), Angeloni, M. A. (M. A.), Folego, G. (G.), Godoy, A. (A.), Hadid, A. (A.), Boulkenafet, Z. (Z.), Komulainen, J. (J.), Akhtar, Z. (Z.), Benlamoudi, A. (A.), Samai, D. (D.), Bekhouche, S. (SE.), Ouafi, A. (A.), Dornaika, F. (F.), Taleb-Ahmed, A. (A.), Qin, L. (L.), Peng, F. (F.), Zhang, L. (L.B.), Long, M. (M.), Bhilare, S. (S.), Kanhangad, V. (V.), Costa-Pazo, A. (A.), Vazquez-Fernandez, E. (E.), Pérez-Cabo, D. (D.), Moreira-Pérez, J. J. (J. J.), González-Jiménez, D. (D.), Mohammadi, A. (A.), Bhattacharjee, S. (S.), Marcel, S. (S.), Volkova, S. (S.), Tang, Y. (Y.), Abe, N. (N.), Li, L. (L.), Feng, X. (X.), Xia, Z. (Z.), Jiang, X. (X.), Liu, S. (S.), Shao, R. (R.), Yuen, P. (P.C.), Almeida, W. R. (W. R.), Andaló, F. (F.), Padilha, R. (R.), Bertocco, G. (G.), Dias, W. (W.), Wainer, J. (J.), Torres, R. (R.), Rocha, A. (A.), Angeloni, M. A. (M. A.), Folego, G. (G.), Godoy, A. (A.), and Hadid, A. (A.)

Abstract

In recent years, software-based face presentation attack detection (PAD) methods have seen a great progress. However, most existing schemes are not able to generalize well in more realistic conditions. The objective of this competition is to evaluate and compare the generalization performances of mobile face PAD techniques under some real-world variations, including unseen input sensors, presentation attack instruments (PAI) and illumination conditions, on a larger scale OULU-NPU dataset using its standard evaluation protocols and metrics. Thirteen teams from academic and industrial institutions across the world participated in this competition. This time typical liveness detection based on physiological signs of life was totally discarded. Instead, every submitted system relies practically on some sort of feature representation extracted from the face and/or background regions using hand-crafted, learned or hybrid descriptors. Interesting results and findings are presented and discussed in this paper.

Published
2017

3. The 2013 Speaker Recognition Evaluation in Mobile Environment

Author

Khoury, E., Vesnicer, B., Franco-Pedroso, J., Violato, R., Boulkenafet, Z., Mazaira Fernandez, L.M., Diez, M., Kosmala, J., Khemiri, H., Cipr, T., Saeidi, R., Gunther, M., Zganec-Gros, J., Zazo Candil, R., Simoes, F., Bengherabi, M., Alvarez Marquina, A., Penagarikano, M., Abad, A., Boulayemen, M., Schwarz, P., Leeuwen, D.A. van, Gonzalez-Dominguez, J., Uliani Neto, M., Boutella, E., Gomez Vilda, P., Varona, P., Petrovska-Delacretaz, D., Matejka, P., Gonzales-Rodriguez, J., Pereira, T., Harizi, F., Rodriguez-Fuentes, L.J., El Shafey, L., Angeloni, M., Bordel, G., Chollet, G., Marcel, S., Khoury, E., Vesnicer, B., Franco-Pedroso, J., Violato, R., Boulkenafet, Z., Mazaira Fernandez, L.M., Diez, M., Kosmala, J., Khemiri, H., Cipr, T., Saeidi, R., Gunther, M., Zganec-Gros, J., Zazo Candil, R., Simoes, F., Bengherabi, M., Alvarez Marquina, A., Penagarikano, M., Abad, A., Boulayemen, M., Schwarz, P., Leeuwen, D.A. van, Gonzalez-Dominguez, J., Uliani Neto, M., Boutella, E., Gomez Vilda, P., Varona, P., Petrovska-Delacretaz, D., Matejka, P., Gonzales-Rodriguez, J., Pereira, T., Harizi, F., Rodriguez-Fuentes, L.J., El Shafey, L., Angeloni, M., Bordel, G., Chollet, G., and Marcel, S.

Abstract

The 6th IAPR International Conference on Biometrics, 04 juni 2013, Contains fulltext : 119428.pdf (author's version ) (Open Access)

Published
2013

4. The 2013 Speaker Recognition Evaluation in Mobile Environment

Author

Khoury, E., Vesnicer, B., Franco-Pedroso, J., Violato, R., Boulkenafet, Z., Mazaira Fernandez, L.M., Diez, M., Kosmala, J., Khemiri, H., Cipr, T., Saeidi, R., Gunther, M., Zganec-Gros, J., Zazo Candil, R., Simoes, F., Bengherabi, M., Alvarez Marquina, A., Penagarikano, M., Abad, A., Boulayemen, M., Schwarz, P., Leeuwen, D.A. van, Gonzalez-Dominguez, J., Uliani Neto, M., Boutella, E., Gomez Vilda, P., Varona, P., Petrovska-Delacretaz, D., Matejka, P., Gonzales-Rodriguez, J., Pereira, T., Harizi, F., Rodriguez-Fuentes, L.J., El Shafey, L., Angeloni, M., Bordel, G., Chollet, G., Marcel, S., Khoury, E., Vesnicer, B., Franco-Pedroso, J., Violato, R., Boulkenafet, Z., Mazaira Fernandez, L.M., Diez, M., Kosmala, J., Khemiri, H., Cipr, T., Saeidi, R., Gunther, M., Zganec-Gros, J., Zazo Candil, R., Simoes, F., Bengherabi, M., Alvarez Marquina, A., Penagarikano, M., Abad, A., Boulayemen, M., Schwarz, P., Leeuwen, D.A. van, Gonzalez-Dominguez, J., Uliani Neto, M., Boutella, E., Gomez Vilda, P., Varona, P., Petrovska-Delacretaz, D., Matejka, P., Gonzales-Rodriguez, J., Pereira, T., Harizi, F., Rodriguez-Fuentes, L.J., El Shafey, L., Angeloni, M., Bordel, G., Chollet, G., and Marcel, S.

Abstract

The 6th IAPR International Conference on Biometrics, 04 juni 2013, Contains fulltext : 119428.pdf (author's version ) (Open Access)

Published
2013

5. The 2013 Speaker Recognition Evaluation in Mobile Environment

Author

Khoury, E., Vesnicer, B., Franco-Pedroso, J., Violato, R., Boulkenafet, Z., Mazaira Fernandez, L.M., Diez, M., Kosmala, J., Khemiri, H., Cipr, T., Saeidi, R., Gunther, M., Zganec-Gros, J., Zazo Candil, R., Simoes, F., Bengherabi, M., Alvarez Marquina, A., Penagarikano, M., Abad, A., Boulayemen, M., Schwarz, P., Leeuwen, D.A. van, Gonzalez-Dominguez, J., Uliani Neto, M., Boutella, E., Gomez Vilda, P., Varona, P., Petrovska-Delacretaz, D., Matejka, P., Gonzales-Rodriguez, J., Pereira, T., Harizi, F., Rodriguez-Fuentes, L.J., El Shafey, L., Angeloni, M., Bordel, G., Chollet, G., Marcel, S., Khoury, E., Vesnicer, B., Franco-Pedroso, J., Violato, R., Boulkenafet, Z., Mazaira Fernandez, L.M., Diez, M., Kosmala, J., Khemiri, H., Cipr, T., Saeidi, R., Gunther, M., Zganec-Gros, J., Zazo Candil, R., Simoes, F., Bengherabi, M., Alvarez Marquina, A., Penagarikano, M., Abad, A., Boulayemen, M., Schwarz, P., Leeuwen, D.A. van, Gonzalez-Dominguez, J., Uliani Neto, M., Boutella, E., Gomez Vilda, P., Varona, P., Petrovska-Delacretaz, D., Matejka, P., Gonzales-Rodriguez, J., Pereira, T., Harizi, F., Rodriguez-Fuentes, L.J., El Shafey, L., Angeloni, M., Bordel, G., Chollet, G., and Marcel, S.

Abstract

The 6th IAPR International Conference on Biometrics, 04 juni 2013, Contains fulltext : 119428.pdf (author's version ) (Open Access)

Published
2013

6. The 2013 face recognition evaluation in mobile environment

Author

Gunther, M, Costa-Pazo, A, Ding, C, Boutellaa, E, Chiachia, G, Zhang, H, De Assis Angeloni, M, Struc, V, Khoury, E, Vazquez-Fernandez, E, Tao, D, Bengherabi, M, Cox, D, Kiranyaz, S, De Freitas Pereira, T, Zganec-Gros, J, Argones-Rua, E, Pinto, N, Gabbouj, M, Simoes, F, Dobrisek, S, Gonzalez-Jimenez, D, Rocha, A, Neto, MU, Pavesic, N, Falcao, A, Violato, R, Marcel, S, Gunther, M, Costa-Pazo, A, Ding, C, Boutellaa, E, Chiachia, G, Zhang, H, De Assis Angeloni, M, Struc, V, Khoury, E, Vazquez-Fernandez, E, Tao, D, Bengherabi, M, Cox, D, Kiranyaz, S, De Freitas Pereira, T, Zganec-Gros, J, Argones-Rua, E, Pinto, N, Gabbouj, M, Simoes, F, Dobrisek, S, Gonzalez-Jimenez, D, Rocha, A, Neto, MU, Pavesic, N, Falcao, A, Violato, R, and Marcel, S

Abstract

Automatic face recognition in unconstrained environments is a challenging task. To test current trends in face recognition algorithms, we organized an evaluation on face recognition in mobile environment. This paper presents the results of 8 different participants using two verification metrics. Most submitted algorithms rely on one or more of three types of features: local binary patterns, Gabor wavelet responses including Gabor phases, and color information. The best results are obtained from UNILJ-ALP, which fused several image representations and feature types, and UC-HU, which learns optimal features with a convolutional neural network. Additionally, we assess the usability of the algorithms in mobile devices with limited resources. © 2013 IEEE.

Published
2013

7. The 2013 face recognition evaluation in mobile environment

Author

Gunther, M, Costa-Pazo, A, Ding, C, Boutellaa, E, Chiachia, G, Zhang, H, De Assis Angeloni, M, Struc, V, Khoury, E, Vazquez-Fernandez, E, Tao, D, Bengherabi, M, Cox, D, Kiranyaz, S, De Freitas Pereira, T, Zganec-Gros, J, Argones-Rua, E, Pinto, N, Gabbouj, M, Simoes, F, Dobrisek, S, Gonzalez-Jimenez, D, Rocha, A, Neto, MU, Pavesic, N, Falcao, A, Violato, R, Marcel, S, Gunther, M, Costa-Pazo, A, Ding, C, Boutellaa, E, Chiachia, G, Zhang, H, De Assis Angeloni, M, Struc, V, Khoury, E, Vazquez-Fernandez, E, Tao, D, Bengherabi, M, Cox, D, Kiranyaz, S, De Freitas Pereira, T, Zganec-Gros, J, Argones-Rua, E, Pinto, N, Gabbouj, M, Simoes, F, Dobrisek, S, Gonzalez-Jimenez, D, Rocha, A, Neto, MU, Pavesic, N, Falcao, A, Violato, R, and Marcel, S

Abstract

Automatic face recognition in unconstrained environments is a challenging task. To test current trends in face recognition algorithms, we organized an evaluation on face recognition in mobile environment. This paper presents the results of 8 different participants using two verification metrics. Most submitted algorithms rely on one or more of three types of features: local binary patterns, Gabor wavelet responses including Gabor phases, and color information. The best results are obtained from UNILJ-ALP, which fused several image representations and feature types, and UC-HU, which learns optimal features with a convolutional neural network. Additionally, we assess the usability of the algorithms in mobile devices with limited resources. © 2013 IEEE.

Published
2013

8. Transport properties in manganite thin films

Author

Mercone S., Perroni C.A., Cataudella V., Adamo C., Angeloni M., Aruta C., De Filippis G., Miletto F., Oropallo A., Perna, Paolo, Petrov A. Yu., Scotti di Uccio U., Maritato L., Mercone S., Perroni C.A., Cataudella V., Adamo C., Angeloni M., Aruta C., De Filippis G., Miletto F., Oropallo A., Perna, Paolo, Petrov A. Yu., Scotti di Uccio U., and Maritato L.

Published
2004

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