Estimating rainfall precipitation amounts by applying computer vision in cameras
First Claim
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1. A system, comprising:
- memory for storing a set of reference images without rain and spanning a plurality of different light conditions;
a camera for capturing an image of a scene with rain; and
a processor for selecting a reference image from the set of reference images based on the light condition of the captured image, performing an arithmetic subtraction image processing operation between the captured image and the reference image to generate a subtraction image, cutting off corner pixels in the subtraction image, and estimating an amount of rain in the subtraction image based on previously calibrated values, wherein the previously calibrated values include actual measurements of rainfall.
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Abstract
A method and system are provided. The method includes storing a set of references images without rain and spanning a plurality of different light conditions. The method further includes capturing, using a camera, an image of a scene with rain. The method also includes selecting a reference image from the set of reference images based on the light condition of the captured image. The method additionally includes performing an arithmetic subtraction image processing operation between the captured image and the reference image to generate a subtraction image. The method further includes estimating an amount of rain in the subtraction image based on previously calibrated values.
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20 Claims
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1. A system, comprising:
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memory for storing a set of reference images without rain and spanning a plurality of different light conditions; a camera for capturing an image of a scene with rain; and a processor for selecting a reference image from the set of reference images based on the light condition of the captured image, performing an arithmetic subtraction image processing operation between the captured image and the reference image to generate a subtraction image, cutting off corner pixels in the subtraction image, and estimating an amount of rain in the subtraction image based on previously calibrated values, wherein the previously calibrated values include actual measurements of rainfall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program product for estimating rainfall precipitation, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a computer to cause the computer to perform a method comprising:
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storing a set of reference images without rain and spanning a plurality of different light conditions; capturing, using a camera, an image of a scene with rain; selecting a reference image from the set of reference images based on the light condition of the captured image; performing an arithmetic subtraction image processing operation between the captured image and the reference image to generate a subtraction image; cutting off corner pixels in the subtraction image; and estimating an amount of rain in the subtraction image based on previously calibrated values, wherein the previously calibrated values include actual measurements of rainfall. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification