Patent ID: 7428482
Filing Date: 2008-09-23
Classification: H04N

Abstract:
1. A method for visualizing a rendering that will result from settings of a virtual camera and lens system in a three dimensional computer graphic modeling environment, the method comprising: receiving a nominal focal length and a focus distance for the lens system of the virtual camera; determining a true focal length for the lens system using the nominal focal length and the focus distance; attaching an optical axis object that represents the optical axis of the virtual camera and lens system in the three dimensional computer graphic modeling environment to a virtual camera object; attaching a marker object to the optical axis at a location determined by using the setting of the virtual camera and lens system and the true focal length; displaying the marker object in the three dimensional computer graphic modeling environment to provide a visual aid for setting the virtual camera and lens system; and updating the location of the marker object on the optical axis responsive to changes in the true focal length resulting from changes in the nominal focal length, the focus distance, or both.