Using a second camera to adjust settings of first camera
First Claim
Patent Images
1. A method comprising:
- operating, by a computing device, a first image-capture system to capture first image data of a scene, wherein the first image-capture system initially uses a first value for a first image setting to capture the first image data; and
while the first image-capture system is capturing the first image data;
operating, by the computing device, a second image-capture system to determine an updated value for the first image setting, wherein the first image-capture system and the second image-capture system are arranged on a given device and oriented in substantially the same direction; and
sending an instruction to the first image-capture system that indicates to use the updated value for the first image setting to continue to capture the first image data;
wherein the first image setting comprises an exposure time for the first image-capture system, andwherein operating the second image-capture system to determine the updated value for the first image setting comprises;
(i) operating the second image-capture system to capture a second plurality of images of the scene, wherein each of the second plurality of images is captured using a different exposure time;
(ii) constructing a pixel-value histogram from the plurality of second images of the scene,(iii) comparing the pixel value histogram to each of a plurality of reference pixel-value histograms to determine, for the pixel-value histogram and each of the reference pixel-value histograms, a respective similarity metric;
(iv) determining respective weights for each of the plurality of reference pixel-value histograms based on the respective similarity metrics; and
(v) determining an exposure time for use by the first camera system, based on the respective weights of the reference pixel-value histograms.
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Abstract
A device may operate a first image-capture system to capture first image data of a scene. While the first image-capture system is capturing the first image data, the device may operate a second image-capture system to determine an updated value for the first image setting, and send an instruction to the first image-capture system that indicates to use the updated value for the first image setting to continue to capture the first image data.
132 Citations
24 Claims
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1. A method comprising:
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operating, by a computing device, a first image-capture system to capture first image data of a scene, wherein the first image-capture system initially uses a first value for a first image setting to capture the first image data; and while the first image-capture system is capturing the first image data; operating, by the computing device, a second image-capture system to determine an updated value for the first image setting, wherein the first image-capture system and the second image-capture system are arranged on a given device and oriented in substantially the same direction; and sending an instruction to the first image-capture system that indicates to use the updated value for the first image setting to continue to capture the first image data; wherein the first image setting comprises an exposure time for the first image-capture system, and wherein operating the second image-capture system to determine the updated value for the first image setting comprises; (i) operating the second image-capture system to capture a second plurality of images of the scene, wherein each of the second plurality of images is captured using a different exposure time; (ii) constructing a pixel-value histogram from the plurality of second images of the scene, (iii) comparing the pixel value histogram to each of a plurality of reference pixel-value histograms to determine, for the pixel-value histogram and each of the reference pixel-value histograms, a respective similarity metric; (iv) determining respective weights for each of the plurality of reference pixel-value histograms based on the respective similarity metrics; and (v) determining an exposure time for use by the first camera system, based on the respective weights of the reference pixel-value histograms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system comprising:
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two or more image-capture systems that comprise at least a first and second image-capture systems, wherein the first and second image-capture systems are oriented in substantially the same direction; a control system configured to; initially operate the first image-capture system to capture first image data using a first value for a first image setting; and while the first image-capture system is capturing the first image data; operate the second image-capture system to determine an updated value for the first image setting; and cause the first image-capture system to use the updated image value for the first image setting to continue to capture the first image data wherein the first image setting comprises an exposure time for the first image-capture system, and wherein, to operate of the second image-capture system to determine the updated value for the first image setting, the control system is configured to; (i) operate the second image-capture system to capture a second plurality of images of the scene, wherein each of the second plurality of images is captured using a different exposure time; (ii) construct a pixel-value histogram from the plurality of second images of the scene, (iii) compare the pixel value histogram to each of a plurality of reference pixel-value histograms to determine, for the pixel-value histogram and each of the reference pixel-value histograms, a respective similarity metric; (iv) determine respective weights for each of the plurality of reference pixel-value histograms based on the respective similarity metrics; and (v) determine an exposure time for use by the first camera system, based on the respective weights of the reference pixel-value histograms. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A non-transitory computer readable medium having stored therein instructions executable by a computing device to cause the computing device to perform functions comprising:
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operating a first image-capture system to capture first image data of a scene, wherein the first image-capture system initially uses a first value for a first image setting to capture the first image data; and while the first image-capture system is capturing the first image data; operating a second image-capture system to determine an updated value for the first image setting, wherein the first image-capture system and the second image-capture system are arranged on a given device and oriented in substantially the same direction; and sending an instruction to the first image-capture system that indicates to use the updated value for the first image setting to continue to capture the first image data; wherein the first image setting comprises an exposure time for the first image-capture system, and wherein operating the second image-capture system to determine an updated value for the first image setting comprises; (i) operating the second image-capture system to capture a second plurality of images of the scene, wherein each of the second plurality of images is captured using a different exposure time; (ii) constructing a pixel-value histogram from the plurality of second images of the scene, (iii) comparing the pixel value histogram to each of a plurality of reference pixel-value histograms to determine, for the pixel-value histogram and each of the reference pixel-value histograms, a respective similarity metric; (iv) determining respective weights for each of the plurality of reference pixel-value histograms based on the respective similarity metrics; and (v) determining an exposure time for use by the first camera system, based on the respective weights of the reference pixel-value histograms. - View Dependent Claims (24)
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Specification