A computer-implemented method, system, and computer program product for determining a valence indication, the computer-implemented method comprising: selecting a number of areas, a number of thresholds, a number of points, a number of emotion models, a number of expression models, a number of algorithms; using the number of areas, the number of thresholds, the number of points, the number of emotion models, the number of expression models, and the number of algorithms to form a valence formula; retrieving a video stream from a camera in the particular area in the location; using the video stream, calculating a valence indication for each of a number of individuals having images in the video stream; and wherein the valence indication represents a predominant emotion of a number of individuals at a point in time in the particular area.