Systems and Methods for Photmetric Normalization in Array Cameras
First Claim
1. A method performed by a processing system to provide a photometric normalization in an array camera having a reference imaging component and a plurality of alternate imaging components associated with the reference imaging component, the method comprising:
- receiving image data for a scene captured by the reference imaging component;
receiving image data for a scene captured by each of plurality of alternate imaging components;
determining a nominal parallax for image data of each of the plurality of alternate imaging components that translate information for a particular pixel in the image data of a particular alternate imaging component to a corresponding pixel in the reference imaging component;
applying the nominal parallax of each particular alternate imaging component to the image data of the particular alternate imaging component;
applying a low pass filter to the image data from the reference imaging component and the shifted image data of each particular alternate imaging component; and
computing gain and offset parameters for each particular alternate imaging components from the low pass filtered shifted image data of the particular alternate imaging component and the low pass filtered image data of the reference imaging component.
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Abstract
Systems and methods for performing photometric normalization in an array camera in accordance with embodiments of this invention are disclosed. The image data of scene from a reference imaging component and alternate imaging components is received. The image data from each of the alternate imaging components is then translated to so that pixel information in the image data of each alternate imaging component corresponds to pixel information in the image data of the reference component. The shifted image data of each alternate imaging component is compared to the image data of the reference imaging component to determine gain and offset parameters for each alternate imaging component. The gain and offset parameters of each alternate imaging component is then applied to the image data of the associate imaging to generate corrected image data for each of the alternate imaging components.
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Citations
21 Claims
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1. A method performed by a processing system to provide a photometric normalization in an array camera having a reference imaging component and a plurality of alternate imaging components associated with the reference imaging component, the method comprising:
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receiving image data for a scene captured by the reference imaging component; receiving image data for a scene captured by each of plurality of alternate imaging components; determining a nominal parallax for image data of each of the plurality of alternate imaging components that translate information for a particular pixel in the image data of a particular alternate imaging component to a corresponding pixel in the reference imaging component; applying the nominal parallax of each particular alternate imaging component to the image data of the particular alternate imaging component; applying a low pass filter to the image data from the reference imaging component and the shifted image data of each particular alternate imaging component; and computing gain and offset parameters for each particular alternate imaging components from the low pass filtered shifted image data of the particular alternate imaging component and the low pass filtered image data of the reference imaging component. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for providing a photometric normalization in an array camera having a reference imaging component and a plurality of alternate imaging components associated with the reference imaging component comprising:
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an array camera including a plurality of imaging components that capture image data of a scene including a reference imaging component and plurality of alternate imaging components; a memory; and a processor that is configured by instructions stored in the memory to; receive image data for a scene captured by the reference imaging component, receive image data for a scene captured by each of plurality of alternate imaging components, determine a nominal parallax for image data of each of the plurality of alternate imaging components that translate information for a particular pixel in the image data of a particular alternate imaging component to a corresponding pixel in the reference imaging component, apply the nominal parallax of each particular alternate imaging component to the image data of the particular alternate imaging component, apply a low pass filter to the image data from the reference imaging component and the shifted image data of each particular alternate imaging component, and compute gain and offset parameters for each particular alternate imaging components from the low pass filtered shifted image data of the particular alternate imaging component and the low pass filtered image data of the reference imaging component. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory medium readable by a processor that stores instructions that when read by the processor configure the processor to perform the method comprising:
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receiving image data for a scene captured by the reference imaging component; receiving image data for a scene captured by each of plurality of alternate imaging components; determining a nominal parallax for image data of each of the plurality of alternate imaging components that translate information for a particular pixel in the image data of a particular alternate imaging component to a corresponding pixel in the reference imaging component; applying the nominal parallax of each particular alternate imaging component to the image data of the particular alternate imaging component; applying a low pass filter to the image data from the reference imaging component and the shifted image data of each particular alternate imaging component; and computing gain and offset parameters for each particular alternate imaging components from the low pass filtered shifted image data of the particular alternate imaging component and the low pass filtered image data of the reference imaging component. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification