Roger Atsa Etoundi

Learn More
In this paper, we define a new business process modeling approach based on the abstraction of the execution environment which is presented as a set of observers. The triggering condition of a task is linked to the state of the environment rather than a predefined order between tasks as suggested by other modeling approaches. Relying on the environment and(More)
A virtual workflow specification is a formal description of business process in the real world and whose execution is done in a virtual organisation. Workflows are activities that involve the coordinated execution of multy tasks performed by different processing entities. Among the processing entities are human resources. These latter belong to an(More)
In our previous work on business process, we have provided the foundation for formalization based on the environment concept. The environment is defined as a set of observers whose values change according to the actions of tasks. From their values, observers are grouped to form a set of states. A state is defined as the characteristic of an environment from(More)
Keywords: Pedestrian detection Non-tensor product wavelet filter ROI Shapelet feature MB-LBP IFLDA a b s t r a c t Nowadays pedestrian detection plays a crucial role in image or video retrieval, video monitoring systems and driving assistance systems. Detecting moving pedestrians is a challenging task, some of the detection methods are ineffective and slow.(More)
  • 1