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US 6,340,994 B1Granted
System and method for using temporal gamma and reverse super-resolution to process images for use in digital display systems
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An image processing system including a display output processor using Temporal Gamma Processing (TGP) and Reverse Super-resolution (RSR) techniques to process images. TGP assures that the time-related representation of an image is as accurate as possible, and thus, based on a previous frame value and a known transfer function of the display modulation system, adjusts its output values to provide a desired output value during display of a desired frame. RSR performs a superset of the frame rate conversion process for converting between disparate input and output frame rates. RSR, improving display quality when intended display images have apparent resolution higher than can be supported by an image modulator, sequences lower resolution images at higher frame rates to simulate higher resolution outputs. RSR also spatially filters the lower resolution images into transitional images by shifting the pixel matrix of each image frame such that the weighted filter center of each sequenced frame is constant or such that motion artifacts are not generated. Additionally, RSR, to prevent motion artifacts, enables moving the viewed images at the display refresh screen rate and uses motion-adaptive filters and motion tracking information to track image objects.
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