Image compensation methods and apparatus using corrections zones
First Claim
Patent Images
1. A display processor, comprising:
- an image signal input configured to receive an input image value associated with a display pixel;
an interpolator configured to determine at least one correction value associated with the display pixel based on horizontal interpolation using predetermined correction values; and
a data combiner configured to combine the input image value with the correction value to produce a corrected image value.
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Abstract
Image defects are compensated by determining correction values based on an array of predetermined correction values based on display measurements. A correction value for a selected pixel is obtained by horizontal and vertical interpolation using the predetermined correction values. The computed correction values correspond to gain or offset corrections that are applied to input image values by multiplication or addition, respectively. Interpolation is based on predetermined correction values associated with a zone or subzones of a zone, or on an rate of change of an interpolation increment per row or per column.
24 Citations
30 Claims
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1. A display processor, comprising:
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an image signal input configured to receive an input image value associated with a display pixel;
an interpolator configured to determine at least one correction value associated with the display pixel based on horizontal interpolation using predetermined correction values; and
a data combiner configured to combine the input image value with the correction value to produce a corrected image value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image corrector, comprising:
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a memory configured to store predetermined correction values;
a processor configured to compute correction values associated with a display pixel based upon a horizontal and a vertical location of the pixel in an image. - View Dependent Claims (11, 12, 13, 15, 16, 17, 18, 20, 21, 22, 24, 25, 27, 29, 30)
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14. A display system, comprising:
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a memory configured to store predetermined correction values associated with a set of image locations;
a correction system configured to receive input image values and produce corrected image values based on horizontal interpolation with the set of predetermined correction values; and
at least one display panel configured to receive corrected image values.
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19. A display interpolator, comprising:
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an input configured to receive a set of predetermined correction values; and
a horizontal increment adder configured to apply a horizontal increment to at least one of the predetermined correction values to produce an output correction value.
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23. A method for correcting image values, comprising:
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storing predetermined correction values associated with a plurality of pixels;
obtaining at least one correction value for a selected pixel by horizontal interpolation based on the predetermined correction values; and
applying the correction value to an image value associated with the selected pixel.
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26. An image correction method, comprising:
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dividing an image into zones;
establishing predetermined correction values associated with the zones;
obtaining a correction value associated with a pixel by horizontal interpolation within a zone; and
applying the correction value to an image value associated with the pixel.
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28. A method for correcting image defects in a display, the method comprising the steps of:
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storing predetermined correction values associated with a set of display pixels;
determining a correction value associated with a pixel by applying horizontal and vertical correction value increments to at least one of the predetermined correction values;
receiving an input image value associated with the pixel; and
applying the correction value to the input image value.
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Specification