Patent ID: 9076391
Filing Date: 2015-07-07
Classification: G09G

Abstract:
1. A method comprising the steps of: receiving an input image having a plurality of pixels; grouping the pixels to corresponding sample locations; determining a maximum intensity and a mean intensity of the pixels in each sample location; generating, for each sample location, a weighted sum intensity from the maximum intensity and the mean intensity of the pixels in the sample location; grouping the sample locations such that each group of sample locations corresponds to one or more modulating elements of the rear modulator; determining a modulation value for each group of sample locations based on the weighted sum intensity of the sample locations of the corresponding group of sample locations, except that, when at least one pixel in a group of pixels is associated with an intensity that exceeds a threshold intensity, and when other pixels in the group of pixels are associated with intensities that are below the threshold intensity, the modulation value associated with the group of pixels is set to a minimum intensity; applying a signal indicative of the modulation value to control one or more modulating elements of the rear modulator to generate an image at the rear modulator; determining a mismatch in spatial resolution between the one or more modulating elements and either the group of pixels or the group of sample locations; and reconfiguring a first arrangement to match a second arrangement, the first arrangement being associated with either the group of pixels or the group of sample locations, the first arrangement having a first spatial resolution, the second arrangement being associated with the one or more modulating elements and having a second spatial resolution, mismatched locations being inserted into the first arrangement when reconfigured, thereby resolving the mismatch in spatial resolution to illuminate an image portion associated with the group of pixels.