Results 31 to 40 of about 407,307 (292)

Generic Spectrahedral Shadows [PDF]

, 2015
Spectrahedral shadows are projections of linear sections of the cone of positive semidefinite matrices. We characterize the polynomials that vanish on the boundaries of these convex sets when both the section and the projection are generic.Comment ...
Sinn, Rainer, Sturmfels, Bernd
core   +1 more source

Statistical Modeling of Shadows in SAR Imagery

Mathematics, 2023
Shadows are a special distortion in synthetic aperture radar (SAR) imaging. They often hamper proper image understanding and target recognition but also offer useful information, and therefore, the statistical modeling of SAR image shadows is imperative.
Xiaojun Luo, Xiangyang Zhang, Jiawen Bao, Ling Chang, Weixin Xi   +4 more
doaj   +1 more source

Shadows and spirals in the protoplanetary disk HD 100453 [PDF]

, 2016
Understanding the diversity of planets requires to study the morphology and the physical conditions in the protoplanetary disks in which they form.
Antichi, J., Apai, D., Benisty, M., Beuzit, J. L., Boccaletti, A., Bonnefoy, M., Buey, T., Chauvin, G., Cudel, M., de Boer, J., Desidera, S., Dominik, C., Dullemond, C. P., Facchini, S., Feldt, M., Fontanive, C., Fusco, T., Garufi, A., Ginski, C., Gisler, D., Gratton, R., Henning, T., Juhasz, A., Kasper, M., Lagrange, A. -M., Langlois, M., LeCoroller, H., Lesur, G., Llored, M., Magnard, Y., Mesa, D., Min, M., Moeller-Nilsson, O., Mouillet, D., Ménard, F., Pinilla, P., Pinte, C., Pohl, A., Pragt, J., Quanz, S. P., Roelfsema, R., Sauvage, J. -F., Sissa, E., Stolker, T., van Boekel, R., Vigan, A., Wagner, K., Wildi, F., Zurlo, A.   +48 more
core   +5 more sources

Shadow-Based Hierarchical Matching for the Automatic Registration of Airborne LiDAR Data and Space Imagery

Remote Sensing, 2016
The automatic registration of LiDAR data and optical images, which are heterogeneous data sources, has been a major research challenge in recent years. In this paper, a novel hierarchical method is proposed in which the least amount of interaction of a ...
Alireza Safdarinezhad, Mehdi Mokhtarzade, Mohammad Javad Valadan Zoej   +2 more
doaj   +1 more source

The Shadow Effect on Surface Biophysical Variables Derived from Remote Sensing: A Review

Land, 2022
In remote sensing (RS), shadows play an important role, commonly affecting the quality of data recorded by remote sensors. It is, therefore, of the utmost importance to detect and model the shadow effect in RS data as well as the information that is ...
Seyed Kazem Alavipanah, Mohammad Karimi Firozjaei, Amir Sedighi, Solmaz Fathololoumi, Saeid Zare Naghadehi, Samiraalsadat Saleh, Maryam Naghdizadegan, Zinat Gomeh, Jamal Jokar Arsanjani, Mohsen Makki, Salman Qureshi, Qihao Weng, Dagmar Haase, Biswajeet Pradhan, Asim Biswas, Peter M. Atkinson   +15 more
doaj   +1 more source

DARCLOS: a cloud shadow detection algorithm for TROPOMI [PDF]

Atmospheric Measurement Techniques, 2022
Cloud shadows are observed by the TROPOMI satellite instrument as a result of its high spatial resolution compared to its predecessor instruments. These shadows contaminate TROPOMI's air quality measurements, because shadows are generally not taken into ...
V. J. H. Trees, V. J. H. Trees, P. Wang, P. Stammes, L. G. Tilstra, D. P. Donovan, D. P. Donovan, A. P. Siebesma   +7 more
doaj   +1 more source

Infants' perception of lightness changes related to cast shadows. [PDF]

PLoS ONE, 2017
When humans perceive the lightness of an object's surface in shadows there is an implicit assumption that cast shadows dim the surface. In two experiments, we investigated whether 5- to 8-month-old infants make this assumption about shadows. According to
Kazuki Sato, So Kanazawa, Masami K Yamaguchi   +2 more
doaj   +1 more source

The Study of Laban Movement Analysis (LMA) in Shadow Puppets Theatre

Estudios sobre el Mensaje Periodístico, 2017
The art of shadow play within the Malaysian Wayang Kulit is unique with rich articulated translucent shadow movement but unfortunately it is slowly dying.
Dahlan Abdul Ghani
doaj   +1 more source

Light-cone gauge approach to arbitrary spin fields, currents, and shadows

, 2014
Totally symmetric arbitrary spin fields in AdS space, conformal fields, conformal currents, and shadow fields in flat space are studied. Light-cone formulation for such fields, currents, and shadows is obtained. Use of the Poincare parametrization of AdS
Metsaev, R. R.
core   +1 more source

Rationalized Algorithmic-Aided Shaping a Responsive Curvilinear Steel Bar Structure

Buildings, 2019
The correlation of the architectural form and the structural system should be the basis for rational shaping. This paper presents algorithmic-aided shaping curvilinear steel bar structures for roofs, using modern digital tools, working in the environment
Jolanta Dzwierzynska
doaj   +1 more source