Deep Single-View 3D Object Reconstruction with Visual Hull Embedding

3D object reconstruction is a fundamental task of many robotics and AI problems. With the aid of deep convolutional neural networks (CNNs), 3D object reconstruction has witnessed a significant progress in recent years. However, possibly due to the prohibitively high dimension of the 3D object space, the results from deep CNNs are often prone to missing some shape details. In this paper, we present an approach which aims to preserve more shape details and improve the reconstruction quality. The key idea of our method is to leverage object mask and pose estimation from CNNs to assist the 3D shape learning by constructing a probabilistic single-view visual hull inside of the network. Our method works by first predicting a coarse shape as well as the object pose and silhouette using CNNs, followed by a novel 3D refinement CNN which refines the coarse shapes using the constructed probabilistic visual hulls. Experiment on both synthetic data and real images show that embedding a single-view visual hull for shape refinement can significantly improve the reconstruction quality by recovering more shapes details and improving shape consistency with the input image.Comment: 11 page

Relational Capability: An Indicator of Collective Empowerment

We define a new index for the collective empowerment of populations based on the capability of actors to have relationships and to enter into networks. This index, called “relational capability” (RC), is dynamic in the sense that the weights of its various components vary across time according to how close the population is to some poverty threshold. It relies on a shift of anthropological viewpoint, putting human relationships at the forefront. RC, which can be formalized in gametheoretic terms of networks, paves the way towards the solution of a number of unsolved issues: Reconciling autonomy and interdependence; unifying the aggregation of individual characteristics with the collective level; questioning unjust institutions and political structures within Sen’s and Nussbaum’s framework of capabilities.Empowerment; Escaping Poverty Index; Index; Relational Capability

Relational Capability : An Indicator of Collective Empowerment

Nous définissons un nouvel indicateur de l'empowerment collectif des populations, basé sur la capacité des acteurs à entrer en relation et à participer à des réseaux. Cet indicateur de " capacité relationnelle " (RC) est dynamique au sens où les pondérations attribuées à ses composantes varient dans le temps selon la façon dont une population se rapproche d'un certain seuil de pauvreté. Elle se fonde sur un changement de perspective anthropologique, qui place les relations humaines au premier plan. La capacité relationnelle, qui peut être formalisée selon le modèle de la théorie des jeux appliquée aux réseaux, ouvre des perspectives de résolution de plusieurs problèmes : réconcilier l'autonomie et l'interdépendance ; unifier l'agrégation des caractéristiques individuelles avec le niveau collectif ; mettre en question les institutions et les structures politiques injustes, dans le cadre de l'approche des capacités définie par Sen et Nussbaum.Capacité relationnelle ; Empowerment ; Indicateur ; Indicateur de sortie de pauvreté

Communication, Literacy and Citizenship: a conceptual orientation in a portuguese children’s television thematic channel, K SIC

This paper highlights the consequential nature of communication, literacy and citizenship and the meta-pattern that connects everything together – the ecology of the human spirit. It argues that, just like human communication, literacy is consequential in nature for humankind. Through each of our different worlds of experience and processes of communication, we manifest both of these human conditions and co-construct everyday practices that engender a plurality of effects. Literacy is a concept common to all humankind. Thus, it forms an indivisible whole with communication. This viewpoint is at odds with that which confines literacy to being understood as the acquisition of certain competences. It is arguable that, just like communication, the human condition of literacy needs to be both encouraged and developed. We suggest here that the idea of borders in literacy should be questioned. The work of Gregory Bateson on the ecology of the human spirit – an imminent characteristic of the human species that is based on the physiological structure of the living being and is in permanent interaction and reconnection with both the biosphere and our ways of seeing the world – supports the viewpoint put forward here. From the communication mediatised by a children’s television channel, from SIC K and from the results of studies carried out into children’s use of television we draw the examples that shall illustrate the theoretical approach taken here. They also underpin two premises of an ongoing project. Firstly, television is part of the solution in that it encourages and develops communication-literacy- citizenship-education-connectivity. Secondly, human rights form a shared platform from which to orient the use of Technologies and define connection strategies for the active participation of the children