1. A computer-implemented method comprising: obtaining, by a computing device operable to capture images, (i) image data that describes a first scene and (ii) audio data; identifying, by the computing device, one or more objects in the first scene based on the image data; obtaining, by the computing device, a transcription of a human speech utterance described by the audio data, wherein the human speech utterance refers to at least a first object of the one or more objects included in the first scene; identifying, by the computing device based at least in part on the transcription and based at least in part on the image data, at least the first object that is referred to by the human speech utterance; defining, by the computing device, a new rule that specifies an image capture behavior of the computing device in response to future instances of identification of the first object in future image data that is different than the current image data; and controlling, by the computing device, a future operation of the computing device to comply with the new rule.