1. A method, comprising: collecting image data relating to one or more real-world objects or persons from a scene while collecting audio data relating to the one or more real-world objects or persons from the same scene, the audio data being used to derive one or more sound objects corresponding to the one or more real-world objects or persons, the image data being used to derive one or more video objects corresponding to the one or more real-world objects or persons; generating, based on the one or more sound objects and the one or more video objects, one or more candidate salient objects; selecting a salient object from among the one or more candidate salient objects and performing one or more perceptual enhancement operations on the salient object; wherein the method is performed by one or more computing devices.