Patent ID: 8294749

Claim:
A method of generating data for displaying an image defined by displayed image data using a plurality of holographically generated temporal subframes, said temporal subframes being displayed sequentially in time such that they are perceived as a single noise-reduced image, the method comprising generating from said displayed image data holographic data for each subframe of said set of subframes such that successive replay of holograms defined by said holographic data for said subframes gives the appearance of said image, and wherein the method further comprises, when generating said holographic data for a subframe, compensating for noise in said displayed image arising from one or more previous subframes of said sequence of holographically generated subframes; wherein said compensating comprises: determining a noise compensation frame for a subframe; and determining an adjusted version of said displayed image data using said noise compensation frame prior to said generation of holographic data for a subframe; and wherein said adjusting comprises transforming said previous subframe data from a frequency domain to a spatial domain, and subtracting said transformed data from data derived from said displayed image data.