DEPTH FROM DEFOCUS CALIBRATION
First Claim
1. A method for calculating depth estimation for a digital imaging device, the method comprising the acts of:
- detecting a first image, by the digital imaging device, associated with a first focus parameter;
detecting a second image, by the digital imaging device, associated with a second focus parameter;
calculating a statistical representation of a region of interest in the first and second images;
determining a ratio for the region of interest based on the statistical representation;
determining one or more focus characteristics using a memory table based on the determined ratio for the region of interest; and
calculating a focus depth, by the digital imaging device, for capture of image data based on the determined one or more focus characteristics associated with the memory table.
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Accused Products
Abstract
A device and methods are provided for calculating depth estimation for a digital imaging device are disclosed and claimed. In one embodiment, a method includes detecting a first image associated with a first focus parameter, detecting a second image associated with a second focus parameter, calculating a statistical representation of a region of interest in the first and second images, and determining a ratio for the region of interest based on the statistical representation. The method may further include determining one or more focus characteristics using a memory table based on the determined ratio for the region of interest, and calculating a focus depth for capture of image data based on the determined one or more focus characteristics associated with the memory table.
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Citations
24 Claims
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1. A method for calculating depth estimation for a digital imaging device, the method comprising the acts of:
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detecting a first image, by the digital imaging device, associated with a first focus parameter; detecting a second image, by the digital imaging device, associated with a second focus parameter; calculating a statistical representation of a region of interest in the first and second images; determining a ratio for the region of interest based on the statistical representation; determining one or more focus characteristics using a memory table based on the determined ratio for the region of interest; and calculating a focus depth, by the digital imaging device, for capture of image data based on the determined one or more focus characteristics associated with the memory table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device configured to estimate focus depth for a scene, the device comprising:
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an image sensor configured to capture image data of the scene; and a processor coupled to the image sensor, the processor configured to receive a first image from the image sensor associated with a first focus parameter; receive a second image the image sensor associated with a second focus parameter; calculate a statistical representation of a region of interest in the first and second images; determine a ratio for the region of interest based on the statistical representation; determine one or more focus characteristics using a memory table based on the determined ratio for the region of interest; and calculate a focus depth for capture of image data based on the determined one or more focus characteristics associated with the memory table. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification