System and method for camera calibration and images stitching
First Claim
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1. A method for color calibrating a series of cameras capturing different portions of a scene, the method comprising:
- selecting a first of a plurality of cameras as a reference camera, wherein each of the plurality of cameras is configured to capture different portions of the scene;
calibrating color component mean values of the reference camera by adjusting color settings of the reference camera, wherein the calibrated color component mean values of the reference camera are based on a first overlapping portion of the scene as captured by the reference camera, and wherein a second camera of the plurality of cameras is configured to capture the first overlapping portion of the scene and a second overlapping portion of the scene;
adjusting color settings of the second camera, in response to the calibrating, to cause color component mean values of the second camera to substantially match the calibrated color component mean values of the reference camera, wherein the adjusting the color settings of the second camera is based on the first overlapping portion of the scene as captured by the second camera.
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Abstract
A practical, real-time calibration of digital omnidirectional cameras in the areas of de-vignetting, brightness, contrast, and white balance control. Novel solutions for the color calibration of an omnidirectional camera rig, and an efficient method for devignetting images are presented. Additionally, a context-specific method of stitching images together into a panorama or a mosaic is provided.
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Citations
21 Claims
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1. A method for color calibrating a series of cameras capturing different portions of a scene, the method comprising:
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selecting a first of a plurality of cameras as a reference camera, wherein each of the plurality of cameras is configured to capture different portions of the scene; calibrating color component mean values of the reference camera by adjusting color settings of the reference camera, wherein the calibrated color component mean values of the reference camera are based on a first overlapping portion of the scene as captured by the reference camera, and wherein a second camera of the plurality of cameras is configured to capture the first overlapping portion of the scene and a second overlapping portion of the scene; adjusting color settings of the second camera, in response to the calibrating, to cause color component mean values of the second camera to substantially match the calibrated color component mean values of the reference camera, wherein the adjusting the color settings of the second camera is based on the first overlapping portion of the scene as captured by the second camera. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. At least one computer-readable device that comprises computer-executable instructions that, when executed by a computer, cause the computer to perform a method for color calibrating a series of cameras capturing different portions of a scene, the method comprising:
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selecting a first of a plurality of cameras as a reference camera, wherein each of the plurality of cameras is configured to capture different portions of the scene; calibrating color component mean values of the reference camera by adjusting color settings of the reference camera, wherein the calibrated color component mean values of the reference camera are based on a first overlapping portion of the scene as captured by the reference camera, and wherein a second camera of the plurality of cameras is configured to capture the first overlapping portion of the scene and a second overlapping portion of the scene; and adjusting color settings of the second camera, in response to the calibrating, to cause color component mean values of the second camera to substantially match the calibrated color component mean values of the reference camera, wherein the adjusting the color settings of the second camera is based on the first overlapping portion of the scene as captured by the second camera. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification