Where can i find the actor model for ROS Indigo and Gazebo2.2 version?

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I want use face_detector package. To use this package in simulation, i need to create the faces or actors in the gazebo simulator. Can anyone please help where can i find the actor models for ROS indigo with Gazebo2.2 version.

Or is there any better way to detect and track the faces using face_detector without actor models?