Abstract: The present invention is a unique method for tubular object visualization. The method involves rendering the exterior of the tube invisible while keeping the interior visible. This “One-sided-transparency” technique renders a more complete view of the tube's interior. When applied to virtual colonoscopy (VC), it compares favorably to existing methods.

Abstract: Networked product containers such as vending machines identify the presence of a potential customer via sensors, and present customized interactive marketing content to consumers. Consumers interact with a touch screen to win prizes, make purchases, or have a fun and interactive experience. The prizes and purchases offered by the product container may be determined by the product container or by one or more content servers in communication with the container. The content server may also provide digital content for display on the product container and remotely update the product container's content. The networked product container also includes a wireless access point to provide nearby wireless-enabled devices network connectivity via the product container.