I was just poking about and found this article: http://www.motioncapturesociety.com/resources/articles/synthespians/92-sky-captain-laurence-olivier-back-from-th

I was just poking about and found this article: http://www.motioncapturesociety.com/resources/articles/synthespians/92-sky-captain-laurence-olivier-back-from-the-dead http://www.motioncapturesociety.com/resources/articles/synth... Has this snippet, which (if accurate) might start to answer your DeNiro question: '[Copyright law professor] Mr. Beard notes that a patchwork of laws governs the use of dead actors' images. '"California protects the images of celebrities for 70 years after death, which is the same as under copyright law,'' he said. "New York, on the other hand, does not have postmortem protection. So Bogart, who died as a resident of California, has state protection, and Cagney, who died as a domiciliary of New York, does not."'