Methods and apparatuses for evaluation of visual stimuli using existing viewing data. An embodiment of a method includes storing viewing data relating to the viewing of visual stimuli. In addition, parameters relating to the stored viewing data are stored. A first visual stimulus for analysis is received. In order to analyze the first visual stimulus, the target parameters for the first visual stimulus are matched with the parameters for the stored viewing data. If there is a sufficient match between the target parameters with the parameters for the stored viewing data, data to represent the first visual stimulus is generated based at least in part on the stored viewing data.
Evaluation of visual stimuli using existing viewing data