Abstract: An entertainment system comprising a primary display, a plurality of seats, and a 4D effects system comprising one or more devices configured to provide a secondary sensory stimulation to users situated at the plurality of seats, wherein each of a plurality of seats has associated therewith a secondary display device and a user input device, wherein the secondary display device is configured to display different content to the primary display and the user input device is configured to accept one or more user inputs in response to the content displayed on the secondary display; wherein the 4D effects system selectively engages one or more of the devices to provide a secondary sensory stimulation to one or more of the plurality of seats based on the inputs received from the user input device associated with the one or more of the plurality of seats.

Abstract: A method and apparatus are provided for registering pre-operative three dimensional (3-D) image data of a deformable organ comprising vessels with multiple intra-operative two-dimensional (2-D) ultrasound images of the deformable organ acquired by a laparoscopic ultrasound probe during a laparoscopic procedure. The apparatus is configured to: generate a 3-D vessel graph from the 3-D pre-operative image data; use the multiple 2-D ultrasound images to identify 3-D vessel locations in the deformable organ; determine a rigid registration between the 3-D vessel graph from the 3-D pre-operative image data and the identified 3-D vessel locations in the deformable organ; and apply said rigid registration to align the pre-operative three dimensional (3-D) image data with the two-dimensional (2-D) ultrasound images, wherein the rigid registration is locally valid in the region of the deformable organ of interest for the laparoscopic procedure.