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Computation coordination is an important decision making activity in the real-time distributed computing in order to achieve the optimal performance. The computing power sharing (CPS) is a lightweight web services based architecture, and suitable for enterprise computing works which are able to run in batch format within a trusty network. The architecture relies on business process execution language (BPEL) which provides a visualized development environment and workflow control management. An adaptive real-time coordination module based on fuzzy group decision making policy that implements fuzzy resolution process facilitates the CPS architecture to provide the real-time computation coordination with quality of service. In this paper, the collaborated computing system has been applied to analyze the robustness of digital watermark by filter bank selection. As the result of this study, the performance can be improved in the aspect of speedup, stability and process time.