Color interpolation method of image sensor
AssigneeIntellectual Ventures II LLC
InventorKil-Ho Ahn
Life of this patent
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Abstract
A color interpolation method of an image sensor including a pixel array which green, red and blue pixels are arrayed in Bayer pattern is provided. The method includes: calculating a first average value of first values filtered by green pixels on even rows and a second average value of a second values filtered by green pixels on odd rows; comparing a value difference between the first average value and the second average value with a standard value; and performing one of a normal interpolation method and a compensation interpolation method with respect to the values filtered by the green pixels according to the comparison.
Claims19
A color interpolation method of an image sensor including a pixel array which green, red and blue pixels are arrayed in Bayer pattern, the color interpolation method comprising:
- calculating a first average value of first values filtered by green pixels on even rows and a second average value of a second values filtered by green pixels on odd rows;
- calculating an average value of a noise of black pixels which do not receive image information;
- comparing a value difference between the first average value and the second average value with the average value of the noise of the black pixels;
- and
- performing selectively, with an image signal processor, one of a normal interpolation method and a compensation interpolation method with respect to the values filtered by the green pixels based on a result of the comparison.
A method, comprising:
- calculating a first average value of first values from green pixels on even rows of a pixel array and a second average value of second values from green pixels on odd rows of the pixel array;
- calculating an average value of a noise of black pixels, which do not receive image information;
- comparing a value difference between the first average value and the second average value with the average value of the noise of the black pixels;
- and
- performing selectively, with an imaging device, a compensation interpolation method with respect to the first and second values from the green pixels based on a result of the comparison.
An image sensor, comprising:
- a pixel array comprising a plurality of pixels configured to receive image information and a plurality of black pixels configured to not receive image information;
- and
- circuitry configured to:
- calculate a first average value of first values from green pixels on even rows of the pixel array and a second average value of second values from green pixels on odd rows of the pixel array;
- calculate an average value of a noise of the plurality of black pixels;
- compare a value difference between the first average value and the second average value with the average value of the noise of the black pixels;
- and
- perform selectively a compensation interpolation method with respect to the first and second values from the green pixels based on a result of the comparison.
Dependencies are inferred from the claim text.