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AssigneeCanon Kabushiki Kaisha
InventorsHarry T. Garland, Gerald A. May
Estimating the term…
A digital x-ray image (600) is divided (802) into regions (602), (604) according to a selected (800) exposure compensation profile. Each region (602),(604) includes pixel values indicative of gray-scale levels in that region. The pixel values are used to index entries in one of a plurality of spatial LUTs (312a-n) assigned (804) to that region. Entries in the selected spatial LUT (312a-n) contain new pixel values indicative of a transform (806) on the original pixel values used to index the spatial LUT (312a-n). Original pixel values are replaced (808) with corresponding pixel values from the spatial LUT (312a-n). Each region of the x-ray image (600) needing compensation is transformed (806), in turn, until the entire image (600) is processed.
A method of compensating for x-ray exposure of a patient body part by a x-ray system, said x-ray system having a sensor array for capturing an x-ray image, said method comprising the steps of:
A computer-readable medium having stored thereon instructions which, when executed by a processor, cause the processor to perform the steps of:
Dependencies are inferred from the claim text.