1,721,200 research outputs found
Dynamic Shape Detection for Multiple Camera Systems
No full textBook cover
Multimedia Video-Based Surveillance Systems pp 71–83Cite as
Dynamic Shape Detection for Multiple Camera Systems
Lucio Marcenaro & Carlo S. Regazzoni
Chapter
165 Accesses
2 Citations
Part of the The Springer International Series in Engineering and Computer Science book series (SECS,volume 573)
Abstract
Several research efforts during the past few years have focused on nonrigid object tracking [1,2]. This research field is interesting because it has several relevant applications: for example, a system able to detect movements of non-rigid objects is useful in tracking and understanding human motion. Among the main tools used to find and track a non-rigid object there are “active shape models” [3], i.e. dynamic models able to describe certain object shapes in their spatial and temporal evolutions. By using a 2D model, a 3D object shape projected onto the image plane can be characterized in order to follow appropriately the temporal evolution of the object, the model has to reflect its nature. On the basis of the nature of the objects to be modeled, active shape models can be divided into:
• snakes (characterization of rigid or non-rigid object shapes) [4];
• deformable templates (based on a mathematical models of objects) [5];
• dynamic contours (based on dynamical mathematical models of objects) [6]
A joint approach to shape-based human tracking and behavior analysis
No full textIn this paper a joint human tracking and recognition system is proposed. While usually these two functions are performed separately, it will be shown that it is possible to improve the estimation performances if these functions are done jointly. For this purpose, a Bayesian estimation framework is presented and implemented using sequential Monte Carlo techniques. Moreover it will be shown how the estimation can be performed efficiently by using the Generalized Hough Transform. The effectiveness of the proposed approach is demonstrated for a variety of image sequences
A Probabilistic Approach to the Coupled Reconstruction and Restoration of Underwater Acoustic Images
No full text
Synthesis of Unequally Spaced Arrays by Simulated Annealing
No full text: Simulated annealing is applied to the synthesis of arrays in order to reduce the peaks of side lobes by acting on the elements' positions and weight coefficients. In the case considered, the number of array elements and the spatial aperture of an unequally spaced array are a priori fixed. Thanks to the high flexibility of simulated annealing, the results obtained for a 25-element array over an aperture of 50l improve those reported in the literature. EDICS NUMBER: SP 1.3 CORRESPONDING AUTHOR: Dr. Vittorio Murino DIBE, Dept. of Biophysical and Electronic Engineering University of Genoa Via Opera Pia 11A, I-16145 Genova, Italy tel: + 39 10 3532 187, fax: + 39 10 3532 134 e-mail: [email protected] 1 Synthesis of Unequally Spaced Arrays by Simulated Annealing Vittorio Murino, Member, IEEE, Andrea Trucco, Student Member, IEEE, and Carlo S. Regazzoni, Member, IEEE Abstract - Simulated annealing is applied to the synthesis of arrays in order to reduce the peaks of side lobes by act..
Os vellos non debem de namorarse. ll sorriso malinconico di Castelao nel suo esilio argentino
No full textArgentina di Renata Mambelli : dalla fine all’inizio del mondo
No full textRenata Mambelli’s novel Argentina (2009) belongs to the overall discourse on the history of the Italian migration to Argentina. Such a subject emerged in Italian literature beginning from the nineties, with the purpose of representing the silent and unknown flow of people from one country to the other. A female novel, Argentina deals with the theme of Italian emigration during the thirties by embracing a gender perspective. The heart of the representation is the migrant’s creatural dignity. By restoring the voice of women and mothers – the key figures in her narrative – Mambelli tackles them of marginality. The symbolic articulation of the protagonist’s migration exposes mythemes such as giving birth, home, roots
Straniera a sé stessa : la genealogia femminile come spazio di autofigurazione nella narrativa di Marjorie Agosín
No full textIn Marjorie Agosín’s novel Sagrada memoria (1994) a new form of memorizing emerge. Abandoning the linearity of discourse, this form is a more synchronic and simultane- ous process, its aim is to regenerate the experience and to create a new way of transmission from one generation to the next. Through the rupture of the diachronical approach, the novel puts the image as a model of memory. The novel is composed by imaginative sequences cre- ated through a series of organizational devices. The methodological instruments of imagology and imaginary theories allow the study of the figure of the portrait as an example of alternative space of discourse
- …
