Pixel location calibration image capture and processing
AssigneeIgnis Innovation Inc.
InventorVyacheslav Shyshkin
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Abstract
What is disclosed are systems and methods for optical correction for correcting for non-uniformity in active matrix light emitting diode device (AMOLED) and other emissive displays, using iterative processing of images of calibration patterns including features of coarse and fine granularity to successively generate a high-resolution estimate of the panel pixel locations.
Claims20
An optical correction method for correcting display of images on a display panel having pixels, each pixel having a light-emitting device, the method comprising:
- arranging a camera in front of the display panel;
- displaying one or more calibration patterns on the display panel while capturing one or more calibration images of said calibration patterns with said camera, said one or more calibration patterns comprising a spaced pattern of coarse features and a spaced pattern of fine features, a spacing of the coarse features larger than a spacing of the fine features;
- generating a coarse estimate of panel pixel locations within the calibration images from the images of the coarse features in the calibration images;
- locating images of the fine features within the calibration images with use of the coarse estimate;
- generating a high-resolution estimate of panel pixel locations within the calibration images from the located images of the fine features in the calibration images, the high-resolution estimate having greater accuracy than the coarse estimate;
- and
- generating correction data for correcting images displayed in the display panel with use of the high-resolution estimate.
An optical correction system for correcting display of images on a display panel having pixels, each pixel having a light-emitting device, the system comprising:
- a camera arranged in front of the display panel;
- an optical processing circuit coupled to said camera adapted to
- display one or more calibration patterns on the display panel while capturing one or more calibration images of said calibration patterns with said camera, said one or more calibration patterns comprising a spaced pattern of coarse features and a spaced pattern of fine features, a spacing of the coarse features larger than a spacing of the fine features;
- generate a coarse estimate of panel pixel locations within the calibration images from the images of the coarse features in the calibration images;
- locate images of the fine features within the calibration images with use of the coarse estimate;
- generate a high-resolution estimate of panel pixel locations within the calibration images from the located images of the fine features in the calibration images, the high-resolution estimate having greater accuracy than the coarse estimate;
- and
- generate correction data for correcting images displayed in the display panel with use of the high-resolution estimate.
Dependencies are inferred from the claim text.