Abstract: A method and apparatus for tracking objects within a video frame sequence. In one embodiment, a method for tracking an object within a video frame sequence is disclosed. The method includes processing each jth frame of the video frame sequence to determine a motion vector defining motion between a prior jth frame and a current jth frame. The method includes creating an object descriptor for an object being tracked followed by generating a document object model comprising motion information and the object descriptor.

Abstract: Computer-implemented methods and apparatus for converting a computer graphics illustration that includes a plurality of overlapping artwork elements from an input format to an output format that differs from the input format. The overlapping artwork elements are classified as transparent or non-transparent artwork elements. The transparent artwork elements are classified as being compatible or incompatible with the output format. The incompatible transparent artwork elements and any of the artwork elements that are at least partially overlapped by any of the incompatible transparent artwork elements are transformed into transformed artwork elements, without transforming any compatible artwork element that is not overlapped by an incompatible transparent artwork element. The transformed artwork elements are compatible with the output format.