1. A method for monitoring video data comprising: identifying a feature vector of an event having data corresponding to at least one of a position and a direction of movement of an object in video data; generating an estimated feature vector corresponding to the feature vector using a dictionary that includes a plurality of basis vectors; identifying an error between the estimated feature vector and the identified feature vector; identifying a high-interest event in the video data in response to the identified error exceeding a threshold; and displaying the video data that includes the high-interest event on a video output device only in response to the identified error exceeding the threshold.