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US 7,460,133 B2Granted
Optimal hiding for defective subpixels
AssigneeSharp Laboratories of America, Inc.
InventorsDean Messing, Louis Joseph Kerofsky
Life of this patent
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Abstract
A technique for the modification of sub-pixels to hide defects for defective sub-pixels.
Claims13
A method of adjusting an image to be displayed on a display having at least one defective sub-pixel:
- (a) receiving an image;
- (b) modifying said image with at least one filter that implements an optimization of a function comprising:
- (i) an error function of the L2 norms of the weighted Fourier color components of a transformed image signal;
- and
- (ii) at least one constraint not implicit in the expression of the function that said at least one filter optimizes;
- where said at least one filter reduces a perceptually relevant metric to reduce the appearance of said at least one defective sub-pixel;
- and
- (c) displaying said image on said display.
5 more elements
A method of adjusting an image to be displayed on a display having at least one defective sub-pixel:
- (a) receiving an image;
- (b) modifying said image to reduce the appearance of said at least one defective sub-pixel, wherein said display has a two dimensional sub-pixel pattern that has a first pattern of different colored sub-pixels in the horizontal direction and a second pattern of different colored sub-pixels in the vertical direction, different from said first pattern, and where said step of modifying is based at least in part on the difference between said first pattern and said second pattern, said modification based upon an optimization which reduces a perceptually relevant metric, said optimization being of a function comprising:
- (i) an error function of the L2 norms of the weighted Fourier color components of a transformed image signal;
- and
- (ii) at least one constraint not implicit in the expression of the function optimized;
- and
- (c) displaying said image on said display.
4 more elements
Dependencies are inferred from the claim text.