Systems and methods for mobile image capture and content processing of driver's licenses
First Claim
1. A computer-implemented method of processing an driver'"'"'s license image, comprising:
- receiving an image captured by a mobile device, wherein the image includes a driver'"'"'s license image surrounded by a background portion;
performing a shape detection test on the image to produce a first set of coordinates representing a set of edges of the driver'"'"'s license image;
performing a rounded corner detection test on the image to produce a second set of coordinates associated with a set of corners of the driver'"'"'s license image;
combining the first set of coordinates and the second set of coordinates to generate a set of cropping parameters associated with borders of the driver'"'"'s license image;
cropping the image based at least on the cropping parameters to remove the background portion of the image to obtain the cropped driver'"'"'s license image;
binarizing the cropped driver'"'"'s license image to produce a binarized cropped driver'"'"'s license image; and
outputting the binarized cropped driver'"'"'s license image.
1 Assignment
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Accused Products
Abstract
Systems and methods are provided for processing and extracting content from an image of a driver'"'"'s license captured using a mobile device. In one embodiment, an image of a driver'"'"'s license (DL) is captured by a mobile device and corrected to improve the quality of the image. The corrected image is then further processed by cropping the image, identifying the format and layout of the DL, binarizing the image and extracting the content using optical character recognition (OCR). Multiple methods of image cropping may be implemented to accurately assess the borders of the DL, and a secondary layout identification process may be performed to ensure that the content being extracted is properly classified.
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Citations
25 Claims
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1. A computer-implemented method of processing an driver'"'"'s license image, comprising:
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receiving an image captured by a mobile device, wherein the image includes a driver'"'"'s license image surrounded by a background portion; performing a shape detection test on the image to produce a first set of coordinates representing a set of edges of the driver'"'"'s license image; performing a rounded corner detection test on the image to produce a second set of coordinates associated with a set of corners of the driver'"'"'s license image; combining the first set of coordinates and the second set of coordinates to generate a set of cropping parameters associated with borders of the driver'"'"'s license image; cropping the image based at least on the cropping parameters to remove the background portion of the image to obtain the cropped driver'"'"'s license image; binarizing the cropped driver'"'"'s license image to produce a binarized cropped driver'"'"'s license image; and outputting the binarized cropped driver'"'"'s license image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system of processing an driver'"'"'s license image captured by a mobile device, comprising:
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a processor; a memory coupled to the processor; a receiving unit which receives an image captured by a mobile device, wherein the image includes a driver'"'"'s license image surrounded by a background portion; a shape detection unit which performs a shape detection test on the image to produce a first set of coordinates representing a set of edges of the driver'"'"'s license image; a rounded-corner detection unit which performs a rounded corner detection test on the image to produce a second set of coordinates associated with a set of corners of the driver'"'"'s license image; a cropping parameter generation unit which combines the first set of coordinates and the second set of coordinates to generate a set of cropping parameters associated with borders of the driver'"'"'s license image; a cropping unit which crops the image based at least on the cropping parameters to remove the background portion of the image to obtain the cropped driver'"'"'s license image; a binarization unit which binarizes the cropped driver'"'"'s license image to produce a binarized cropped driver'"'"'s license image; and an output unit which outputs the binarized cropped driver'"'"'s license image. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A computer-implemented method of processing an driver'"'"'s license image, comprising:
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receiving a image captured by a mobile device, wherein the image includes a driver'"'"'s license image surrounded by a background portion; detecting a set of feature points in the image; constructing a set of feature descriptors based on the set of detected feature points; performing a feature matching operation between the set of feature descriptors and a set of predetermined features of a template driver'"'"'s license; generating a set of coordinates representing a set of corners of the driver'"'"'s license image based on outputs of the feature matching operating; cropping the image based at least on the set of coordinates to remove the background portion of the image to obtain the cropped driver'"'"'s license image; binarizing the cropped driver'"'"'s license image to produce a binarized cropped driver'"'"'s license image; and outputting the binarized cropped driver'"'"'s license image. - View Dependent Claims (23, 24, 25)
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Specification