Patent ID: 8731315
Filing Date: 2014-05-20
Classification: G06T,H04N

Abstract:
1. An image data encoding method comprising: accessing image data and mask information for pixels of the image data in a first representation domain, wherein the mask information defines background pixels and foreground pixels; transforming the image data in the first representation domain to a second representation domain; determining mask information in the second representation domain by using the mask information in the first representation domain; masking the image data in the second representation domain by setting image data to a value of zero for background pixels as defined by the determined mask information in the second representation domain, wherein the image data is comprised of at least one component, and wherein in masking the image data, a masking transform is applied to the image data in a component following the setting-to-zero step, wherein the masking transform adjusts image data away from a value of zero for foreground pixels as defined by the determined mask information in the second representation domain; and encoding the masked image data in the second representation domain.