Efficient Color Histogram Indexing for Quadratic Form Distance Functions

An improved shipping container having novel locking features in the end panel and corner flaps. The novel locking features improved bulge resistance at the end panels from sideward bulge of the product. The improved container comprises a pair of corner flaps being hinged from the side panels and folded inwardly against an end panel with the two corner flaps and end panel on each side of the container having a quadruple lock. The lock is formed by providing a locking tab on each corner flap as well as a pair of locking tabs on the end panel with the end panel and corner flaps locking tabs being designed to be swung and locked in the opening formed by the aligned mating locking tab.