title: Research trends in wireless visual sensor networks when exploiting prioritization.
abstract: The development of wireless sensor networks for control and monitoring functions has created a vibrant investigation scenario, where many critical topics, such as communication efficiency and energy consumption, have been investigated in the past few years. However, when sensors are endowed with low-power cameras for visual monitoring, a new scope of challenges is raised, demanding new research efforts. In this context, the resource-constrained nature of sensor nodes has demanded the use of prioritization approaches as a practical mechanism to lower the transmission burden of visual data over wireless sensor networks. Many works in recent years have considered local-level prioritization parameters to enhance the overall performance of those networks, but global-level policies can potentially achieve better results in terms of visual monitoring efficiency. In this paper, we make a broad review of some recent works on priority-based optimizations in wireless visual sensor networks. Moreover, we envisage some research trends when exploiting prioritization, potentially fostering the development of promising optimizations for wireless sensor networks composed of visual sensors.
authors.affiliation: DTEC-UEFS, State University of Feira de Santana, Feira de Santana 44036-900, Brazil. danielgcosta@uefs.br.
authors.forename: Daniel G
authors.initials: DG
authors.lastname: Costa
authors.affiliation: DCA-CT-UFRN, Federal University of Rio Grande do Norte, Natal 59072-970, Brazil. affonso@dca.ufrn.br.
authors.forename: Luiz Affonso
authors.initials: LA
authors.lastname: Guedes
authors.affiliation: IDMEC-FEUP-UP, University of Porto, Porto 4200-465, Portugal. vasques@fe.up.pt.
authors.forename: Francisco
authors.initials: F
authors.lastname: Vasques
authors.affiliation: INESC TEC-FEUP-UP, University of Porto, Porto 4200-465, Portugal. pportugal@fe.up.pt.
authors.forename: Paulo
authors.initials: P
authors.lastname: Portugal