Systems, methods and computer readable media for performing a domain-specific metasearch, and obtaining search results therefrom. A sliding caliper is used for taking the measurements. The result of the filtering operation is compared to a value determined by the rule, or if further rules are to be employed, the result is transmitted to a further section filter which performs a further filtering operation on the bitstream data. This makes it possible to reduce the total number of parallax images without changing the number of actually observed parallax images, thus achieving a higher resolution of each parallax image actually observed.