Spatio-temporal error diffusion for imaging devices

摘要

A method for reducing bit-depth of image data for an imaging device includes receiving an image frame for display to the imaging device. The method additionally includes applying temporal error diffusion for the image frame to produce a plurality of image subframes, wherein temporal errors generated in one subframe of the image frame are passed to a next subframe of the image frame for temporal error diffusion. The method also includes applying spatial error diffusion to remaining temporal errors from the temporal error diffusion of the image frame.

主权项

1. A method for reducing bit-depth of image data of an image frame, the method comprising:
receiving the image frame for display to an imaging device; applying, by one or more processors, temporal error diffusion for the image frame to produce a plurality of image subframes, wherein applying temporal error diffusion further comprises:
allocating, using a first allocation of error, lightness temporal error between a temporal domain and a spatial domain for each image subframe of the plurality of image subframes, wherein allocating the lightness temporal error comprises allocating error in the temporal domain to a first set of subframes of the plurality of subframes and allocating error in the spatial domain to a second set of subframes of the plurality of subframes;allocating, using a second allocation of error, chrominance temporal error between the temporal domain and the spatial domain for each image subframe of the plurality of subframes, wherein the second allocation of error is different than the first allocation of error;applying temporal error diffusion to the error allocated in the temporal domain; andapplying spatial error diffusion to the error allocated to the spatial domain.