Auto-Alignment of Image Sensors in a Multi-Camera System
AssigneeGoPro, Inc.
InventorsTimothy Macmillan, Scott Patrick Campbell, David A. Newman, Yajie Sun
Life of this patent
Estimating the term…
Abstract
A pair of cameras having an overlapping field of view is aligned based on images captured by image sensors of the pair of cameras. A pixel shift is identified between the images. Based on the identified pixel shift, a calibration is applied to one or both of the pair of cameras. To determine the pixel shift, the camera applies correlation methods including edge matching. Calibrating the pair of cameras may include adjusting a read window on an image sensor. The pixel shift can also be used to determine a time lag, which can be used to synchronize subsequent image captures.
Claims21
1-20. (canceled)
An image capture device comprising:
- a first image sensor having a first field of view, the first image sensor configured to capture a first image;
- a second image sensor having a second field of view, wherein a portion of the first field of view and a portion of the second field of view comprise an overlapping field of view, the second image sensor configured to capture a second image;
- and
- a processor configured to:
- correlate data of the first image and the second image representative of the overlapping field of view by shifting at least one image by a first number of pixels along a rolling shutter direction such that a difference measure between pixels of the data of the first image and the second image representative of the overlapping field of view is substantially minimized;
- identify a pixel shift between the first image and the second image based on the first number of pixels;
- and
- calibrate the first image sensor or the second image sensor based on the identified pixel shift.
A method comprising:
- correlating data of an overlapping field of view of a first image and a second image by shifting at least the first image or the second image by a number of pixels along a rolling shutter direction;
- identifying a pixel shift between the first image and the second image based on the number of pixels;
- and
- calibrating the first image sensor or the second image sensor based on the identified pixel shift.
A system comprising:
- a first image sensor having a first field of view, the first image sensor configured to capture a first image;
- a second image sensor having a second field of view, wherein a portion of the first field of view and a portion of the second field of view comprise an overlapping field of view, the second image sensor configured to capture a second image;
- and
- a processor configured to:
- correlate data of the first image and the second image representative of the overlapping field of view by shifting at least one image by a number of pixels along a rolling shutter direction;
- identify a pixel shift between the first image and the second image based on the number of pixels;
- and
- calibrate the first image sensor or the second image sensor based on the identified pixel shift.
Dependencies are inferred from the claim text.