Enhancing spatial resolution in a stereo camera imaging system
First Claim
1. A stereoscopic imaging system, comprising:
- a first image sensor configured to capture a first color image of a scene, wherein the first color image sensor includes color pixels having color values;
a second image sensor configured in a predetermined spatial relationship to the first image sensor, so as to form a stereoscopic imaging system, wherein the second image sensor is configured to capture, concomitantly with the first color image, a second image of the scene, wherein the second image sensor includes luminance pixels having luminance values and color pixels having color values, and wherein the first image sensor has a greater number of color pixels than the second image sensor;
a color reconstruction circuit configured to generate, using information from the second image, a second color image; and
an output circuit configured to generate, using information from the first and second color images, an output image,wherein split photodiode pixels are used on the second image sensor, but not the first image sensor.
1 Assignment
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Accused Products
Abstract
Techniques are disclosed for capturing stereoscopic images using one or more high color density or “full color” image sensors and one or more low color density or “sparse color” image sensors. Low color density image sensors, may include substantially fewer color pixels than the sensor'"'"'s total number of pixels, as well as fewer color pixels than the total number of color pixels on the full color image sensor. More particularly, the mostly-monochrome image captured by the low color density image sensor may be used to reduce noise and increase the spatial resolution of an imaging system'"'"'s output image. In addition, the color pixels present in the low color density image sensor may be used to identify and fill in color pixel values, e.g., for regions occluded in the image captured using the full color image sensor. Optical Image Stabilization and/or split photodiodes may be employed on one or more sensors.
37 Citations
20 Claims
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1. A stereoscopic imaging system, comprising:
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a first image sensor configured to capture a first color image of a scene, wherein the first color image sensor includes color pixels having color values; a second image sensor configured in a predetermined spatial relationship to the first image sensor, so as to form a stereoscopic imaging system, wherein the second image sensor is configured to capture, concomitantly with the first color image, a second image of the scene, wherein the second image sensor includes luminance pixels having luminance values and color pixels having color values, and wherein the first image sensor has a greater number of color pixels than the second image sensor; a color reconstruction circuit configured to generate, using information from the second image, a second color image; and an output circuit configured to generate, using information from the first and second color images, an output image, wherein split photodiode pixels are used on the second image sensor, but not the first image sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An image processing method, comprising:
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capturing, using a first image sensor, a first color image of a scene, the first color image including color pixels having color values; capturing, using a second image sensor configured in a predetermined spatial relationship to the first image sensor, a second image of the scene, wherein the second image sensor is configured to capture the second image of the scene concomitantly with the first color image, wherein the second image sensor includes luminance pixels having luminance values and color pixels having color values, and wherein the first image sensor has a greater number of color pixels than the second image sensor; generating, using a color reconstruction circuit, a second color image based, at least in part, on the second image; generating, using a luminance reconstruction circuit, a luminance image based, at least in part, on the second image; generating, using a registration circuit, a registered color image based, at least in part, on the first image and the luminance image; and merging, using the output circuit, the registered color image and the second color image to generate an output image. - View Dependent Claims (12, 13, 14, 15)
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16. An imaging system, comprising:
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a first image sensor, comprising; a first plurality of luminance pixel elements; and a second plurality of color pixel elements, wherein a number of the second plurality of color pixel elements comprises less than 50% of a sum of a number of the first plurality of luminance pixel elements and the number of the second plurality of color pixel elements, and wherein the second plurality of color pixel elements are arranged in a predetermined pattern on the image sensor; and a second image sensor, comprising; a third plurality of color pixel elements, wherein a number of the third plurality of color pixel elements is greater than the number of the second plurality of color pixel elements, and wherein the imaging system is configured to combine image information captured concomitantly by the first image sensor and the second image sensor to generate an output image, and wherein split photodiode pixels are used on the first image sensor, but not the second image sensor. - View Dependent Claims (17, 18, 19, 20)
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Specification