Real-Time On-Demand Motion Video Change Detection in the Sensor Web Environment

Abstract

Detecting motion-based video change, such as different types of motion video or applications using different change detection algorithms in a Web system, is difficult. This paper designs and implements architecture for a real-time or near real-time on-demand motion video change detection system using the Sensor Observation Service (SOS) and the Web Processing Service (WPS) in the Sensor Web environment. Real-time or near real-time includes sensors that obtain motion video data, SOS provides motion video data to WPS and WPS processes this data. Three solution methods are introduced: the GetObservation operation of SOS by transaction, dynamical interaction between SOS and WPS, and WPS real-time or near real-time processing. On-demand means that a developer can choose different motion video change detection algorithms under different applications or different conditions. For this purpose, a flexible, standards-based and service-oriented WPS architecture is designed, which consists of three layers: the WPS interface layer, the field interface layer and the implementation layer. To test the proposed approach, a video change detection case of monitoring a road situation is shown, which was a demonstration for Open Geospatial Consortium Web Service phase 7. The results demonstrate that the proposed approach is feasible.

Real-time GIS data model and sensor web service platform for environmental data management

“…The Sensor Web has real-time or near real-time characteristics [ 32 – 35 ]. Use of the Sensor Web technologies facilitates the realization of real-time characteristics of the real-time GIS model.…”

“…The sensors are in-situ sensors whose location is fixed during the observation. SensorML can describe both in-situ and mobile sensors [ 37 ] such as the GPS receiver sensor on moving taxis in the Sensor Web Service Platform [ 42 ] and a camera sensor on a car [ 35 ]. The Sensor Web Service Platform obtains and provides real-time observation data using a standard service (see Figures 5 and 7 ).…”

“…A Sensor Web can obtain, access, manage, and process sensor data in a standardized way in real-time or near real-time [ 32 – 35 ]. Therefore, a Sensor Web Service Platform integrating Sensor Web technologies to provide the interfaces in GSW for registering, planning, and monitoring various space-borne, airborne, and ground sensors is adopted to support the realization of the real-time GIS data model.…”

Oilseed rape productive potentialities assessment under OGC web service by using geoprocessing

“…Hence, GIS web services are independent of platform, independent of location, and independent of programming language. Basing on these characteristics, the geoprocessing service of fertility assessment is built in this paper with web services technology and OGC [18,19].…”

高分辨率对地观测的若干前沿科学问题

“…聚焦服务系统(如图 2 所示)在互联网环境下, 通过一系列标准接口来提供自动化的传感器规划与 调度 [52] 、异构观测数据获取 [53] 及在线数据处理 [54] 等服务, 从而实现网络环境下多传感器资源的动态管 理 [55] 、事件智能感知、按需观测 [56] 、观测融合、数 据同化和智能服务 [57] , 从已有的地球空间信息(4A-Anytime, Anywhere, Anything, Anyone)服务能力转变 为 灵 性 (4R -Right Time, Right Information, Right Place, Right Person)服务水平 [58~61] .…”