1. A method for prioritizing the adjudication of object alerts as a function of relative visual attribute values, the method comprising: in response to detecting an object that is discernible and static within an image scene of a video data input, a processing unit: generating an alert; tracking the detected object over a tracking period of time; extracting image features from the video data input over the tracking time period; learning and ranking relative strengths of each of a plurality of attributes from the extracted features, wherein the plurality of attributes comprises a foregroundness attribute and a staticness attribute; and prioritizing the alert relative to other alerts according to a learned importance or relevance value generated from the relative foregroundness and staticness attribute strengths.