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Simulated raytrace in Gazebo

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Hello, I have an application where I have a camera attached to the end of a 5-DOF robot arm (X, Y, Z, yaw, pitch). The robot arm is moving the camera around a fixed object (0,0,0) for inspection purposes. Given the position and orientation of the camera, is it possible to detect what the the camera is seeing? For example, I would like to know whether the camera is looking at the object, and if so, determine the world coordinates of the object the camera is looking at. Given the known camera axis (position/orientation), is it possible to extend a line along the +x-axis and see where it hits the fixed object (if it all)? Thanks

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