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System and methods for calibration of an array camera

  • US 9,986,224 B2
  • Filed: 08/31/2015
  • Issued: 05/29/2018
  • Est. Priority Date: 03/10/2013
  • Status: Active Grant
First Claim
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1. An array camera system, comprising:

  • an array of cameras comprising a plurality of imaging components that capture images of a scene from different viewpoints including;

    a reference imaging component having a reference viewpoint; and

    an associate imaging component;

    a processor; and

    memory in communication with the processor, said memory storing;

    a software application comprising machine readable instructions;

    calibration information for the reference imaging component comprising scene independent geometric corrections for image data captured by the reference imaging component to account for distortions related to the mechanical construction of the imaging component and produce a corrected reference image;

    calibration information for the associate imaging component comprising scene independent geometric corrections for image data captured by the associate imaging component that correct the location of pixels in an image captured by the associate imaging component to locations of corresponding pixel locations in the corrected reference image, where corresponding pixel locations image the same point in a scene in the absence of disparity due to parallax;

    wherein execution of the software application by the processor directs the processor to;

    capture image data using the plurality of imaging components in the array of cameras including;

    a reference image captured by the reference imaging component; and

    an associate image captured by the associate imaging component;

    apply corrections to the locations of pixels of the reference image using the calibration information for the reference imaging component;

    apply corrections to the locations of pixels of the associate image using the calibration information for the reference imaging component;

    generate a depth map by measuring disparity due to parallax between the corrected pixels in the reference image and the corrected pixels in the associate image; and

    synthesize an image using the depth map and at least some of the pixels from the captured image data.

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