Video monitoring using a hierarchical combination of camera sensors

A method, comprising:

• causing, by a sensor system, a primary circuit and a secondary circuit to enter a reduced-power state;
• in response to a first indication to enter a monitor state, causing, by the sensor system, the secondary circuit to enter an active state while the primary circuit remains in the reduced-power state;
• identifying, by the secondary circuit, a particular object of interest within a dataset received from a secondary sensor;
• and
• in response to determining that the particular object of interest cannot be validated within a particular amount of time without waking the primary circuit from the reduced-power state, waking, by the sensor system, the primary circuit from the reduced-power state.

A sensor system, comprising:

• a primary circuit including a primary sensor and configured to detect objects of interest within data collected from the primary sensor;
• a secondary circuit including a secondary sensor and configured to detect objects of interest within data collected from the secondary sensor;
• and
• a control circuit configured to:
• wake the secondary circuit from a reduced-power state and enter a monitor state, wherein the secondary circuit is configured to detect a particular object of interest within a particular dataset collected by the secondary sensor;
• determine, based on the particular object of interest, a type of object for the object of interest;
• and
• determine, based on the type of object, whether to wake the primary circuit from the reduced-power state to validate the particular object of interest.