Methods and systems for processing video are disclosed. More specifically, the compact patch antenna comprises a base layer having a cavity, a ground plane located on the base layer, and having an opening over at least a portion of the cavity, a substrate located on the ground plane, and a driver patch located on the substrate. The tubular knit paint roller cover fabric of the present invention is also manufactured in a size that makes it appropriate for installation onto paint roller cover cores. This grouped configuration also performs a parallel operation on the bits and on the groups in the same time. Magnitudes of the edges are accumulated to generate accumulation values. The identified sensitive data is provided to the requesting agent in response to the request for sensitive data.