IMAGING SYSTEMS WITH VISIBLE LIGHT SENSITIVE PIXELS AND INFRARED LIGHT SENSITIVE PIXELS
First Claim
1. An imaging system, comprising:
- an array of image sensor pixels, wherein the array of image sensor pixels comprises;
a first group of image sensor pixels configured to generate first image signals in response to light of a first color;
a second group of image sensor pixels configured to generate second image signals in response to light of a second color that is different from the first color;
a third group of image sensor pixels configured to generate third image signals in response to light of at least two colors; and
a group of infrared image sensor pixels configured to generate infrared image signals in response to infrared light.
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Accused Products
Abstract
An image sensor may have an array of image pixels arranged in color filter unit cells that each have at least one red image pixel that generates red image signals, at least one blue image pixel that generate blue image signals, at least one clear image pixels that generate clear image signals, at least one infrared image pixel that generates infrared image signals, and optionally at least one green image pixel that generates green image signals. The image sensor may be coupled to processing circuitry that performs chroma demosaicking operations on the image signals. The processing circuitry may generate an infrared image using the infrared image signals and a luminance value using the clear, red, blue, and infrared image signals. The processing circuitry may perform point filter operations on the image signals based on the generated luminance value to produce corrected visible light image signals having improved image quality.
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Citations
21 Claims
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1. An imaging system, comprising:
an array of image sensor pixels, wherein the array of image sensor pixels comprises; a first group of image sensor pixels configured to generate first image signals in response to light of a first color; a second group of image sensor pixels configured to generate second image signals in response to light of a second color that is different from the first color; a third group of image sensor pixels configured to generate third image signals in response to light of at least two colors; and a group of infrared image sensor pixels configured to generate infrared image signals in response to infrared light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of generating images with an imaging system, wherein the imaging system comprises an array of image sensor pixels arranged in a plurality of repeating unit cells of image sensor pixels, wherein each unit cell in the plurality of unit cells comprises a first, second, third, and fourth image sensor pixel, the method comprising:
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with the first image sensor pixel, capturing first image signals in response to light of a first color; with the second image sensor pixel, capturing second image signals in response to light of a second color that is different from the first color; with the third image sensor pixel, capturing third image signals in response to light of at least two of the first color, the second color, and a third color that is different from the first and second colors; and with the fourth image sensor pixel, capturing infrared image signals in response to infrared light. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A system, comprising:
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a central processing unit; memory; input-output circuitry; and an imaging device, wherein the imaging device comprises; an array of image pixels arranged in rows and columns, wherein the array of image pixels comprises a first group of image pixels configured to generate first pixel values in response to light of a first color, a second group of image pixels configured to generate second pixel values in response to light of a second color, a group of infrared image pixel configured to generate infrared pixel values in response to infrared light, and a group of clear image pixels configured to generate clear pixel values in response to light of at least two colors. - View Dependent Claims (20, 21)
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Specification